Fine structure of the spectra of giant pulses from actively Q-switched solid-state lasers with injection of external radiation

Journal Article · Fri Aug 01 04:00:00 EDT 1980 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1980v010n08ABEH010526· OSTI ID:6690586

Gainer, A V; Gulev, V S; Pivtsov, V S; Folin, K G

A theoretical and experimental investigation was made of the problem of controlling the mode structure of the spectra of giant pulses from actively Q-switched solid-state lasers by injection of external radiation at a frequency independent of the natural frequencies of the resonator. A marked difference was observed between the spectral kinetic characteristics of giant pulses from neodymium-glass and ruby lasers. On the basis of a comparison with previously established differences in the free-lasing dynamics, an explanation of this observation by nonlinear mode interaction is proposed and confirmed theoretically and experimentally. A method of improving the mode selection efficiency under giant pulse conditions using passive negative feedback is proposed and implemented experimentally using a neodymium-glass laser. Giant pulse generation with a spectral width of < or =5 x 10/sup -4/cm/sup -1/ and a power of 20 MW was obtained using an actively Q-switched neodymium-glass laser.

• Research Organization: Institute of Automation and Electrometry, Siberian Branch of the Academy of Sciences of the USSR, Novosibirsk
• OSTI ID: 6690586
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 10:8; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CONTROL
LASERS
NEODYMIUM LASERS
OPTICAL MODES
OSCILLATION MODES
PULSES
Q-SWITCHING
RUBY LASERS
SOLID STATE LASERS
SPECTRA