Multiwavelength UV-IR laser system based on a-cut Nd : YVO{sub 4} - YVO{sub 4} composite vanadate crystals with {sigma}-polarised radiation
- A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Lasing properties of a-cut Nd : YVO{sub 4} - YVO{sub 4} composite vanadate crystals are experimentally studied for the {pi} and {sigma} polarisations of radiation at the {sup 4}F{sub 3/2} - {sup 4}I{sub 11/2} transition. Polarisation dependences of the lasing characteristics of passively Q-switched Nd : YVO{sub 4} - YVO{sub 4} lasers with Cr{sup 4+} : YAG Q-switches are investigated. It is shown that the laser operates with the highest efficiency in the case of the {sigma}-polarised radiation (minimum pulse duration shorter than 1.5 ns, maximum peak power up to 25 kW, maximum peak energy about 35 {mu}J at a slope efficiency up to 32 %). Frequency conversion to the second and fourth harmonics is demonstrated. Based on this study, a multiwavelength laser with bactericidal and therapeutic effects is developed for treatment of a wide spectrum of diseases.
- OSTI ID:
- 22043947
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 42, Issue 6; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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