Add to BibSonomy
Abstract
We report on single-pass optical parametric generation for high power, high repetition rate (RR), ultrafast broadband optical radiation in the mid-IR. Taking advantage of broad phase-matching bandwidth (BW) of the crystals for the interacting waves having zero group velocity mismatch, we have used a 50 mm long MgO-doped periodically poled crystal to develop a single-pass, parametric source producing femtosecond output pulses at a RR of 78 MHz. Pumping with a femtosecond Yb-fiber laser at 1064 nm, the source produces signal and idler radiation tunable across 1422–1561 nm and 4229–3342 nm, respectively. The signal radiation has a pulse and spectral BW of 296 fs and 9.2 nm centered at 1492 nm, respectively, with a time-BW product , close to the transform limit. The idler radiation has spectral BW as high as 123 nm centered at 3709 nm. The source produces a signal (idler) beam of power of 2.07 W (0.54 W) at 1492 nm (3709 nm) in a Gaussian spatial profile with peak-to-peak passive power fluctuation better than 5% (4%) over 4 h at a single-pass conversion efficiency as high as .
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Chengzhi Hu, Tao Chen, PeiPei Jiang, Bo Wu, Jianjia Su, and Yonghang Shen
Opt. Lett. 40(24) 5774-5777 (2015)
Anirban Ghosh, Deepika Yadav, and G. K. Samanta
Opt. Lett. 44(14) 3522-3525 (2019)
L. Xu, Q. Fu, S. Liang, D. P. Shepherd, D. J. Richardson, and S.-U. Alam
Opt. Lett. 42(19) 4036-4039 (2017)