Abstract

We report a continuous-wave (cw) source of tunable mid-infrared radiation providing tens of milliwatt of output power in the 6460–7517 nm spectral range. The source is based on difference-frequency generation (DFG) in orientation-patterned (OP)-GaAs pumped by a Tm-fiber laser at 2010 nm and a 1064 nm-Yb-fiber-pumped cw optical parametric oscillator. Using a 25.7-mm-long OP-GaAs crystal, we have generated up to 51.1 mW of output power at 6790 nm, with $>40\mathrm{mW}$ and $>20\mathrm{mW}$ across 32% and 80% of the mid-infrared tuning range, respectively, which is to the best of our knowledge the highest tunable cw power generated in OP-GaAs in this spectral range. The DFG output at maximum power exhibits passive power stability better than 2.3% rms over more than 1 h and a frequency stability of 1.8 GHz over more than 1 min, in high spatial beam quality. The system and crystal performance at high pump powers have been studied.

© 2014 Optical Society of America

Multimilliwatt, tunable, continuous-wave, mid-infrared generation across 4.6–4.7  μm based on orientation-patterned gallium phosphide

Kavita Devi, A. Padhye, P. G. Schunemann, and M. Ebrahim-Zadeh
Opt. Lett. 43(10) 2284-2287 (2018)

Broadly tunable single-frequency cw mid-infrared source with milliwatt-level output based on difference-frequency generation in orientation-patterned GaAs

Sergey Vasilyev, Stephan Schiller, Alexander Nevsky, Arnaud Grisard, David Faye, Eric Lallier, Z. Zhang, A. J. Boyland, J. K. Sahu, M. Ibsen, and W. A. Clarkson
Opt. Lett. 33(13) 1413-1415 (2008)

Femtosecond optical parametric oscillator continuously tunable across 3.6–8  μm based on orientation-patterned gallium phosphide

Callum F. O’Donnell, S. Chaitanya Kumar, P. G. Schunemann, and M. Ebrahim-Zadeh
Opt. Lett. 44(18) 4570-4573 (2019)

Nanosecond difference-frequency generation in orientation-patterned gallium phosphide

Junxiong Wei, S. Chaitanya Kumar, Hanyu Ye, Kavita Devi, Peter G. Schunemann, and M. Ebrahim-Zadeh
Opt. Lett. 42(11) 2193-2196 (2017)

Picosecond difference-frequency-generation in orientation-patterned gallium phosphide

J. C. Casals, S. Parsa, S. Chaitanya Kumar, K. Devi, P. G. Schunemann, and M. Ebrahim-Zadeh
Opt. Express 25(16) 19595-19602 (2017)