Efficient high-energy Raman laser for troposphere ozone lidar

Summary form only given. The use of a folded cavity for Raman laser to obtain the efficient high-energy first Stokes generation is demonstrated in this report. Four types of cavities (linear cavity, two types of folded three-mirror cavities and folded four-mirror cavity) are investigated. Optical pulses with 15-16 ns duration and 0.6 mrad divergence are generated at pump pulse energy up to 135 mJ. The obtained first Stokes pulses are frequency doubled in DKDP crystal to produce 281 nm radiation needed as an online radiation for different absorption lidars for ozone sounding in troposphere.