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  • Spotlight Summary by Shakil Rehman

    • Backscatter multiple wavelength digital holography for color micro-particle imaging
    • Color digital holography has potential applications in quantitative assessment of small particles in diverse fields where color, size and shape of the particles is required in volume distributions such as aerosols. The...
    • Appl. Opt. 61(5) B83-B95 (2022) View: Abstract | HTML | PDF

Information Acquisition, Processing, and Display

  • Spotlight Summary by Daniel Brunner

    • Optical processor for a binarized neural network
    • Neural networks (NNs) enabled computing tasks that previously appeared reserved to abstract human intelligence. These computing concepts continue to surprise, for example by reaching almost human-quality language...
    • Opt. Lett. 47(15) 3892-3895 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Wei Ren

    • Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines
    • In the aviation industry, there is an urgent need for a thorough understanding of turbine combustion to improve turbine engine efficiency and reduce combustion emissions. Tunable diode laser absorption spectroscopy is a...
    • Appl. Opt. 61(28) 8540-8552 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Manuel Martínez-Corral

    • Enhancement of three-dimensional image visualization under photon-starved conditions
    • Three-dimensional (3D) imaging in low-light conditions has been a challenge for many applications, such as medical imaging, autonomous unmanned vehicles, or defense. To obtain those images, the photon counting integral...
    • Appl. Opt. 61(21) 6374-6382 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Carmelo Rosales-Guzmán

    • Fast testing of partial camera lenses based on a liquid crystal spatial light modulator
    • The smartphone is, with no doubt, one the most popular and useful technological devices of the last decade. With the integration of built-in compact cameras, smartphones became a powerful and versatile tool for a wide...
    • Appl. Opt. 61(22) 6420-6429 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Steven Cundiff

    • High-speed two-dimensional terahertz spectroscopy with echelon-based shot-to-shot balanced detection
    • The concept of multidimensional spectroscopy was developed in nuclear magnetic resonance in the 1960s and 1970s. Its ability to reveal coupling between nuclear spins was revolutionary. Over the last couple of decades,...
    • Opt. Lett. 47(14) 3479-3482 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Silvio Montrésor

    • Pupil apodization in digital holographic microscopy for reduction of coherent imaging effects
    • Dark-field Digital Holographic Microscopy (df-DHM) with a single lens exhibits high potentiality for future overlay metrology on semiconductor wafers. It is a powerful technique to assess the vertical alignment between...
    • Opt. Continuum 1(5) 1202-1217 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by David Paganin

    • Annular illumination in 2D quantitative phase imaging: a systematic evaluation
    • Quantitative phase imaging (QPI) takes another step forward with this interesting study on the influence of annular illumination. Understood in its broadest sense, QPI has made important contributions to optics...
    • Appl. Opt. 61(12) 3409-3418 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Sylvain Mezil

    • Miniature non-contact photoacoustic probe based on fiber-optic photoacoustic remote sensing microscopy
    • Realizing a miniature, user-friendly and contactless endoscopic photoacoustic probe is the goal for many imaging applications. By reducing the imaging head to a single mode fiber and a gradient-index (GRIN) lens, the...
    • Opt. Lett. 46(22) 5767-5770 (2021) View: Abstract | HTML | PDF

Light–Matter Interactions

  • Spotlight Summary by Alfred U’Ren

    • High-depth-resolution imaging of dispersive samples using quantum optical coherence tomography
    • Quantum optical coherence tomography (QOCT) was proposed two decades ago, as a quantum-enabled alternative to its classical counterpart, or OCT. Two main advantages were identified for QOCT over OCT: a factor-of-two...
    • Opt. Lett. 47(19) 4949-4952 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Cosmo Lupo

    • Stealth in quantum illumination with a probabilistic mixed strategy
    • Quantum illumination allows us to detect a faint target in the presence of substantial background noise. It exploits a pair of entangled photons, one of which is sent towards the target, and the other retained as a...
    • J. Opt. Soc. Am. B 39(7) 1799-1806 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Johann Toudert

    • Thermal insulator film with transparency to visible light using metallic nano-spheres
    • The optical properties of windows, in a broad spectral range in the visible and infrared, play an important role in the energy efficiency of buildings. Windows must block mid-to-far infrared radiation that carries,...
    • J. Opt. Soc. Am. B 39(10) 2760-2768 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Kishan Dholakia

    • Orbital dynamics at atmospheric pressure in a lensed dual-beam optical trap
    • Optical trapping of mesoscopic particles can be used to make high exquisite, precision measurements. This field has seen a surge of activity in the last few decades and spans studies across the sciences. The paper by...
    • J. Opt. Soc. Am. A 39(8) 1468-1478 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Jin-hui Chen

    • Surface plasmon resonance gas sensor with a nanoporous gold film
    • Surface plasmon resonance (SPR) sensors based on evanescent-wave interactions have been widely used in the detection of biological and chemical analytes due to their advantages of label-free detection and real-time...
    • Opt. Lett. 47(16) 4155-4158 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Quynh Dang and Ho Wai Howard Lee

    • Polarization discrimination and surface sensing with a near-IR nanostructured hybrid mirror
    • Efficient manipulation on the polarization of light is fundamental for most of the photonic applications, ranging from imaging to optical communication.

      Metasurface-based mirrors, such as periodically...
    • Opt. Lett. 47(16) 4036-4039 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Anderson M. Amaral

    • Plasmonically enhanced composite vortex beam generation using ultra-thin dielectric fork gratings
    • This work shows how the efficiency of subwavelength dielectric gratings can be substantially enhanced with the application of a thin gold layer between the grating and the substrate. This is an interesting result...
    • J. Opt. Soc. Am. B 39(8) 2084-2090 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Kevin C. Zhou

    • Simultaneous multiple time scale imaging for kHz–MHz high-speed accelerometry
    • Current high-speed imaging technology forces us to make several compromises, one of which is the tradeoff between the imaging speed and the recording duration. Specifically, at frame rates in the MHz to GHz regime, one...
    • Photon. Res. 10(7) 1712-1722 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Alex Krasnok

    • Bound valley edge states in the continuum
    • The pursuit of wave control in artificial media has been expanded with tools borrowed from topology, enabling exotic phenomena such as unidirectional transport, robustness to fabrication imperfections, and immunity to...
    • Opt. Lett. 47(12) 3107-3110 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Ilya Shadrivov

    • High-efficiency reflective metasurfaces for terahertz vortex wave generation based on completely independent geometric phase modulations at three frequencies
    • Artificially structured surfaces, or metasurfaces, have their functionality defined by the actual structure. Quite often the desired electromagnetic properties are achieved just in a narrow frequency range, because the...
    • J. Opt. Soc. Am. B 39(7) 1752-1761 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Marco Piccardo

    • Ultra-broadband flat-top quantum dot comb lasers
    • A chip-scale broadband frequency comb emitting in the telecom range useful for multiplexed communications was demonstrated, thanks to advances in the design of quantum dot lasers. In wavelength-division multiplexing...
    • Photon. Res. 10(5) 1308-1316 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Emmanuel Centeno and Antoine Moreau

    • Deep-learning-assisted designing chiral terahertz metamaterials with asymmetric transmission properties
    • Despite their sub-wavelength thickness, metasurfaces are powerful devices that allow manipulating electromagnetic waves with an almost complete level of control, explaining why such structures are currently...
    • J. Opt. Soc. Am. B 39(6) 1511-1519 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Andrey Kuzmin

    • High-average-power ultrafast laser amplifier with along-the-side end pumping
    • Eliminating the parasitic thermal effects in active elements, to avoid beam quality degradation, is a key point in high-power laser design. The authors of this publication in JOSA B showed that carefully following this...
    • J. Opt. Soc. Am. B 39(6) 1565-1570 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Filippo Miatto

    • Nonlinear phase estimation via nonlinear-linear hybrid interferometers
    • Some properties of the materials involved in optical technologies give rise to nonlinear effects, such as a phase shift that depends quadratically on the intensity of the field. It is important then to be able...
    • J. Opt. Soc. Am. B 39(5) 1323-1328 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Nick Parziale

    • High-repetition-rate krypton tagging velocimetry in Mach-6 hypersonic flows
    • Understanding the hypersonic flow physics around a high-speed vehicle informs its design: vehicle performance (lift and drag), thermal protection, controls, and structural design. A long run of over 50 years of research...
    • Appl. Opt. 61(9) 2192-2197 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Johann Toudert

    • Infrared-blocking plasmonic meta-glass for energy-saving passive windows
    • To save energy in an increasingly warm world, building and vehicle windows must do more than let the sunlight in. They must selectively transmit or reflect it depending on wavelength across the solar spectrum....
    • Opt. Lett. 47(9) 2242-2245 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Yi-Pu Wang

    • Two-color second-order sideband generation via magnon Kerr nonlinearity in a cavity magnonical system
    • Nonlinear effects are prevalent in nature, and the nonlinearity gives our world its vibrant hues and enables us to build information technologies. We can edit, manipulate, convert, and store data by using nonlinear...
    • J. Opt. Soc. Am. B 39(4) 1042-1049 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by René Sachse

    • Determination of optical constants of thin films in the EUV
    • New technologies rely on nanoelectronics, focusing more attention on innovative techniques using extreme ultraviolet light (EUV) and thin films to enable higher-performance, more energy-efficient, and lower-cost chips....
    • Appl. Opt. 61(8) 2060-2078 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Jorge Parra

    • Mid-infrared Ge-based thermo-optic phase shifters with an improved figure of merit
    • Optical phase shifters are key building blocks for integrated photonics. Phase modulation is a pivotal operation to enable a diverse range of applications such as optical routing, sensing, light ranging and detection,...
    • Opt. Mater. Express 12(3) 1055-1064 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Hadiseh Nasari and Mercedeh Khajavikhan

    • Non-reciprocal parity-time symmetry breaking based on magneto-optical and gain/loss double ring resonators
    • Optical loss in general is assumed to be detrimental, however, its judicious combined action with gain in a parity-time (PT) symmetric system has given rise to a plethora of intriguing phenomena. Of interest is the...
    • Opt. Mater. Express 12(4) 1453-1460 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Ilya Shadrivov

    • High efficiency ambient RF energy harvesting by a metamaterial perfect absorber
    • Wireless power transfer is an important topic, and many devices these days are charged without any cables. This process typically requires dedicated charging devices. Researchers from USA went further and decided to...
    • Opt. Mater. Express 12(3) 1242-1250 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Daniel Lopez

    • MEMS-tunable dielectric metasurface lens using thin-film PZT for large displacements at low voltages
    • Optical elements that offer fast, precise, and variable axial focus control are in great demand in many applications such as 3D displays, augmented reality, industrial inspection, and biomedical imaging. The most...
    • Opt. Lett. 47(5) 1049-1052 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Francesco Morichetti

    • 2  μm optical frequency comb generation via optical parametric oscillation from a lithium niobate optical superlattice box resonator
    • There are wavelength ranges where the generation of coherent radiation is more difficult than others and novel concepts of light sources need to be developed. In the mid-infrared (MIR) region, where direct laser...
    • Photon. Res. 10(2) 509-515 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Jakub Cajzl

    • Polarized spectroscopy and diode-pumped laser operation of disordered Yb:Ca3Gd2(BO3)4 crystal
    • Ytterbium-doped crystals and glasses are used for very high-power lasers and amplifiers and also to generate femtosecond pulses in ultrafast mode-locked lasers at wavelengths near 1 μm. For practical and...
    • Opt. Mater. Express 12(2) 673-684 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Alessandro Veltri

    • Photocurrent in plasmonic nanofibers
    • This work presents a theoretical description for the photoresponse and photocurrent in nanofibers embedding metal nanoparticles and quantum dots in their core.

      Exploiting the full potential of such composite...
    • J. Opt. Soc. Am. B 39(1) 248-257 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Kavita Devi

    • Backward optical parametric oscillator threshold and linewidth studies
    • The backward-wave optical parametric oscillator (BWOPO) has attracted attention for narrowband spectral generation in a mirrorless configuration and is of interest in applications that require narrow spectral...
    • J. Opt. Soc. Am. B 39(2) 408-420 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Guangyuan Li

    • Porous SiO2 coated dielectric metasurface with consistent performance independent of environmental conditions
    • Geromel et al. report a method to create environment-protected metasurfaces, enabling transplantable metasurfaces working in different environments, especially in biological applications.

      The performance...
    • Opt. Mater. Express 12(1) 13-21 (2022) View: Abstract | HTML | PDF

Optical Design and Instrumentation

  • Spotlight Summary by Kishan Dholakia

    • Orbital dynamics at atmospheric pressure in a lensed dual-beam optical trap
    • Optical trapping of mesoscopic particles can be used to make high exquisite, precision measurements. This field has seen a surge of activity in the last few decades and spans studies across the sciences. The paper by...
    • J. Opt. Soc. Am. A 39(8) 1468-1478 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Jin-hui Chen

    • Surface plasmon resonance gas sensor with a nanoporous gold film
    • Surface plasmon resonance (SPR) sensors based on evanescent-wave interactions have been widely used in the detection of biological and chemical analytes due to their advantages of label-free detection and real-time...
    • Opt. Lett. 47(16) 4155-4158 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Peter Banzer

    • Vector space-time wave packets
    • The structure of light, i.e. the spatial and temporal distributions of its inherent parameters such as intensity, polarization, frequency, etc, can be tailored and manipulated on demand and, thus, adapted to...
    • Opt. Lett. 47(16) 4131-4134 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Kevin C. Zhou

    • Simultaneous multiple time scale imaging for kHz–MHz high-speed accelerometry
    • Current high-speed imaging technology forces us to make several compromises, one of which is the tradeoff between the imaging speed and the recording duration. Specifically, at frame rates in the MHz to GHz regime, one...
    • Photon. Res. 10(7) 1712-1722 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Nick Parziale

    • High-repetition-rate krypton tagging velocimetry in Mach-6 hypersonic flows
    • Understanding the hypersonic flow physics around a high-speed vehicle informs its design: vehicle performance (lift and drag), thermal protection, controls, and structural design. A long run of over 50 years of research...
    • Appl. Opt. 61(9) 2192-2197 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Nicolò Maccaferri

    • Spatial shifts of reflected beams from surface polaritons in antiferromagnets
    • Magnon polaritons-driven photonics. In this work, scientists from China focus on the excitation of surface magnon polaritons and their effect on the Goos–Hänchen and Imbert–Fedorov shifts of...
    • J. Opt. Soc. Am. B 39(4) 1010-1020 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Guangyuan Li

    • Full-Stokes polarization transformations and time sequence metasurface holographic display
    • The information capacity of metasurface holograms can be significantly augmented by adopting multiplexing techniques. Compared with other multiplexing schemes, such as wavelength (i.e., color), angle, orbital angular...
    • Photon. Res. 10(4) 1031-1038 (2022) View: Abstract | HTML | PDF

Optics in Biology and Medicine

  • Spotlight Summary by Danuta Sampson

    • Combining fluorescence lifetime with spectral information in fluorescence lifetime imaging ophthalmoscopy (FLIO)
    • In this paper, the authors show how to combine three different measurements obtained from fluorescence lifetime imaging ophthalmoscopy (FLIO) into one to enhance diagnostic sensitivity for early changes in the retinal...
    • Biomed. Opt. Express 13(10) 5483-5494 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Francisco J González

    • Non-invasive and rapid diagnosis of type 2 diabetes mellitus based on the analysis of hair by front-face fluorescence spectroscopy
    • Diabetes is a global health problem and one of the leading causes of death in the world. Blood glucose testing is needed for early detection and blood glucose control, both of them being key in increasing the quality of...
    • Appl. Opt. 61(14) 4022-4029 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Linhui Yu

    • Wavefront engineered light needle microscopy for axially resolved rapid volumetric imaging
    • Laser scanning microscopy plays an essential role in the 3D volumetric imaging of biological tissue. However, conventional point-scanning techniques commonly have limited acquisition speed. Other well-developed...
    • Biomed. Opt. Express 13(3) 1702-1717 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Ugo Tricoli

    • Speckle-resolved optical coherence tomography for mesoscopic imaging within scattering media
    • Speckle-resolved optical coherence tomography (srOCT) is a new and very attractive imaging method that intends to fill the gap between deep imaging with low resolution, as in diffuse optical tomography, and traditional...
    • Biomed. Opt. Express 13(4) 2068-2081 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Johann Toudert

    • Identification of endoplasmic reticulum formation mechanism by multi-parametric, quantitative super-resolution imaging
    • Quantitative pixel analysis of time-resolved super-resolution images enables a deeper knowledge of the reorganization mechanisms in eukaryotic cells. For a full understanding of organisms, the dynamic mechanisms taking...
    • Opt. Lett. 47(2) 357-360 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Ferruccio Pisanello and Massimo De Vittorio

    • Optical phased array neural probes for beam-steering in brain tissue
    • The ability to exploit the full potential of optical neural interfaces in sub-cortical brain structures is limited by the high scattering nature of the neural tissue. This is boosting the scientific community to develop...
    • Opt. Lett. 47(5) 1073-1076 (2022) View: Abstract | HTML | PDF

  • Spotlight Summary by Johann Toudert

    • Intelligent smartphone-based multimode imaging otoscope for the mobile diagnosis of otitis media
    • Traditional clinical diagnosis is based on the evaluation of analytical data by a medical staff. This approach may require bulky or unpractical analysis equipment, as well as trained personnel able to handle it and...
    • Biomed. Opt. Express 12(12) 7765-7779 (2021) View: Abstract | HTML | PDF

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  1. Demonstrating Arago–Fresnel laws with Bessel beams from vectorial axicons [1]
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