Abstract
A 1.88 μm Ba(NO3)2-based stimulated Raman
scattering (SRS) laser pumped by a potassium-titanyl-phosphate-based
optical parametric oscillator (OPO) laser is presented. Under the pumping
energy of a 130 mJ 1064 nm Q-switched Nd:YAG laser, a 40 mJ 1.57 μm laser
is achieved; the maximum output energy of the 1.88 μm Raman laser reaches
7.5 mJ with a pulse duration of 5.3 ns at repetition rates of 10 Hz, and
the corresponding total optical conversion efficiency is about 5.8%. The
combination of the SRS and OPO techniques significantly extends the
wavelength from 1.064 to 1.57 μm (OPO) and then demonstrates
Stokes-shifting to 1.88 μm (SRS).
© 2016 Chinese Laser Press
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