Abstract
We report on a high-power periodically poled MgO-doped lithium niobate (MgO:PPLN)-based femtosecond optical parametric amplifier (OPA), featuring a spectral seamless broadband mid-infrared (MIR) output. By modifying the initial chirp and spectrum of the mode-locked seed laser, the Yb fiber pump laser exhibits a final output power of 14 W with sub-200-fs pulse duration after power amplification and compression. When the OPA was seeded with a broadband amplified spontaneous emission (ASE) source, a damage-limited 0.6 W broadband MIR radiation was experimentally obtained under the pump power of 10.15 W at 82 MHz repetition rate, corresponding to an overall OPA conversion efficiency of 32.7%. The 3 dB bandwidth of the mid-IR idler was 291.9 nm, centering at 3.34 μm.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Lin Xu, Ho-Yin Chan, Shaif-ul Alam, David J. Richardson, and David P. Shepherd
Opt. Express 23(10) 12613-12618 (2015)
A. Aadhi and G. K. Samanta
Opt. Lett. 42(15) 2886-2889 (2017)
L. Xu, Q. Fu, S. Liang, D. P. Shepherd, D. J. Richardson, and S.-U. Alam
Opt. Lett. 42(19) 4036-4039 (2017)