Multiwavelength UV-IR laser system based on a-cut Nd : YVO{sub 4} - YVO{sub 4} composite vanadate crystals with {sigma}-polarised radiation

Journal Article · Sat Jun 30 04:00:00 EDT 2012 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2012V042N06ABEH014784· OSTI ID:22043947

Sirotkin, A A ^[1]

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1. 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.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 6 Vol. 42; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHROMIUM IONS
CONVERSION
CRYSTALS
EFFICIENCY
HARMONICS
NEODYMIUM LASERS
POLARIZATION
PULSES
SPECTRA
SWITCHES
VANADATES
YTTRIUM COMPOUNDS