Tham khảo tài liệu 'advances in optical and photonic devices 2011 part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 116 Advances in Optical and Photonic Devices 9. Prolonged performance of the Ce LiCAF laser In this test the Ce LiCAF laser was operating continuously for 4 hours daily during 20 days. The operating conditions were maintained constant over the duration of the test. The output power at the pump wavelengths 527 nm 262 nm and of the Ce LiCaF laser output at 290 nm was continuously monitored. The drift in the phase matching in the CLBO crystal has been periodically revised and eliminated. The observed variations in Ce LiCAF output 290 nm follows those of green pump beam 527nm and do not exceed 8 . as showed at the . 10. Conclusion A highly efficient compact and rugged 1 kHz tunable UV Ce LiCAF laser pumped by the fourth harmonic of a diode-pumped commercial Nd YLF laser for ozone DIAL measurements has been developed and the performance of this laser was investigated. The Ce LiCAF laser delivered 1 mJ pulse energy at 290 nm wavelength and was able to be wavelength tuned from 281 to 316 nm that was achieved with a single fused silica dispersion prism in the laser cavity. Fast shot-to-shot wavelength switching was obtained by the harmonic motion of tuning mirror mounted on a servo-controlled high speed galvanometric deflector. 11. References Browell . 1991 . Differential Adsorption Lidar Sensing of Ozone Proc. IEEE 77 pp. 419432 Carswell. Fromzel . and Prasad . 2003 . A Tunable Narrow Linewidth 1kHz Ce LiCAF Laser with 46 Efficiency OSA TOPS Advanced Solid-State Photonics pp. 203-209. Govorkov . Weissner . Schroder Th. Stamm U. Zschoke W. and Basting D. 1998. Efficient high average power and narrow spectral linewidth operation of Ce LiCAF laser at 1 kHz repetition rate Advanced Solid State Lasers OSA TOPS 19 pp. 2-5. McGee . Gross . Butler . and Kimvilakani . 1995 . Improved stratospheric ozozne lidar Optical Engineering Vol. 34 pp. 1421-1430. McDermit S. Walsh . Deslis A. and White . 1995 . Optical system design for a .
