Abstract

The low-frequency tail of an octave-spanning supercontinuum (SC) generated by an Er:fiber comb is enhanced by a multipass Ho:YLF amplifier and used in a sum-frequency-generation scheme to obtain absolute referencing of a single-mode Tm-Ho:YAG laser tunable around $2.09\mathrm{\mu m}$. By tuning the comb repetition frequency, the probing laser is scanned across the absorption lines of a ${\mathrm{CO}}_2$ gas sample and highly accurate absorption profiles are measured. This approach can be readily scaled to any wavelength above $\sim 2\mathrm{\mu m}$.

© 2011 Optical Society of America

1.6-W self-referenced frequency comb at 2.06 μm using a Ho:YLF multipass amplifier

Nicola Coluccelli, Alessio Gambetta, Davide Gatti, Marco Marangoni, Alberto Di Lieto, Mauro Tonelli, Gianluca Galzerano, and Paolo Laporta
Opt. Lett. 36(12) 2299-2301 (2011)

High-precision molecular interrogation by direct referencing of a quantum-cascade-laser to a near-infrared frequency comb

D. Gatti, A. Gambetta, A. Castrillo, G. Galzerano, P. Laporta, L. Gianfrani, and M. Marangoni
Opt. Express 19(18) 17520-17527 (2011)

High-power, hybrid Er:fiber/Tm:fiber frequency comb source in the 2 μm wavelength region

Florian Adler and Scott A. Diddams
Opt. Lett. 37(9) 1400-1402 (2012)

Frequency-comb-referenced quantum-cascade laser at 4.4 μm

S. Bartalini, P. Cancio, G. Giusfredi, D. Mazzotti, P. De Natale, S. Borri, I. Galli, T. Leveque, and L. Gianfrani
Opt. Lett. 32(8) 988-990 (2007)

Broadband mid-IR frequency comb with CdSiP₂ and AgGaS₂ from an Er,Tm:Ho fiber laser

D. Sánchez, M. Hemmer, M. Baudisch, K. Zawilski, P. Schunemann, H. Hoogland, R. Holzwarth, and J. Biegert
Opt. Lett. 39(24) 6883-6886 (2014)