Abstract
We report on a first of its kind, to our knowledge broadband amplification in a Fe:CdSe single crystal in the mid-IR beyond 5 µm. The experimentally measured gain properties demonstrate saturation fluence close to 13 mJ/cm2 and support the bandwidth up to 320 nm (full width at half maximum). Such properties allow the energy of the seeding mid-IR laser pulse, generated by an optical parametric amplifier, to be pushed up to more than 1 mJ. Dispersion management with bulk stretcher and prism compressor enables 5-µm laser pulses of 134-fs duration, providing access to multigigawatt peak power. Ultrafast laser amplifiers based on a family of Fe-doped chalcogenides open the route for wavelength tuning together with energy scaling of mid-IR laser pulses that are strongly demanded for the areas of spectroscopy, laser–matter interaction, and attoscience.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Ekaterina Migal, Andrey Pushkin, Boris Bravy, Vyacheslav Gordienko, Nikita Minaev, Anatoly Sirotkin, and Fedor Potemkin
Opt. Lett. 44(10) 2550-2553 (2019)
P. Fjodorow, M. P. Frolov, Y. V. Korostelin, V. I. Kozlovsky, S. O. Leonov, Y. K. Skasyrsky, B. I. Denker, B. I. Galagan, S. E. Sverchkov, V. V. Koltashev, V. G. Plotnichenko, M. V. Sukhanov, and A. P. Velmuzhov
Opt. Lett. 47(2) 309-312 (2022)
A. V. Pushkin, M. M. Mazur, A. A. Sirotkin, V. V. Firsov, and F. V. Potemkin
Opt. Lett. 44(19) 4837-4840 (2019)