We report a simple, compact, picosecond, dual-wavelength optical parametric oscillator (DW-OPO) at 160 MHz, based on two MgO:PPLN crystals sharing the same cavity and synchronously pumped by an Yb–fiber laser at 1064 nm. The two signal and idler wavelength pairs are independently tunable in the near- and mid-infrared across 1550–1615 nm and 3118–3393 nm, respectively, and can be arbitrarily tuned, even to degeneracy and beyond, without coherent coupling, irrespective of operating wavelength. The DW-OPO provides two signal and idler pulse trains and delivers as much as 1.5 W of average signal power at a degenerate wavelength of 1550 nm from each arm, at a total (signal plus idler) power extraction efficiency of as much as 44%. The two output signal pulse trains have durations of and , with Gaussian spatial quality, and exhibit passive power stability, better than 3.6% rms over h. We also demonstrate the possibility of tailoring the pulse trains from the DW-OPO by controlling the delay between the pump pulses at the input to the two MgO:PPLN crystals.
© 2014 Optical Society of AmericaFull Article | PDF Article
M. Ebrahimzadeh, G. J. Hall, and A. I. Ferguson
Opt. Lett. 18(4) 278-280 (1993)
S. Lecomte, L. Krainer, R. Paschotta, M. J. P. Dymott, K. J. Weingarten, and U. Keller
Opt. Lett. 27(19) 1714-1716 (2002)
S. Chaitanya Kumar and M. Ebrahim-Zadeh
Opt. Express 19(27) 26660-26665 (2011)