Physical processes in active media

Suppression of the free-lasing background on injection of external monochromatic radiation into the resonator of a high-energy flashlamp-pumped dye laser

M. M. Asimov, A. G. Varpakhovich, A. N. Rubinov


Abstract: A method is proposed for raising the efficiency of frequency locking when an external narrow-band signal is injected into a laser. It is based on providing frequency and spatial filtering of the radiation in a nonlinear absorber (a spectral contrast enhancer) positioned inside the resonator of a dye laser. It is shown that this method can increase the efficiency of concentrating the laser output energy into a narrow 5-pm wide line to a value of 90%.

UDC: 539.33:621.375.8

PACS: 42.55.Mv, 42.60.Da, 42.60.Jf, 42.60.Lh, 42.60.Fc, 42.65.-k

Received: 12.09.1989

 English version: Soviet Journal of Quantum Electronics, 1990, 20:4, 377–378

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