This article is cited in 1 paper

Lasers

Stable pulsed picosecond GSGG:Nd³⁺ laser with a resonator based on Sagnac interferometer

V. I. Prokhorenko, D. V. Surovtsev, E. A. Tikhonov, D. Ya. Yatskiv


Abstract: An investigation was made of the characteristics of a laser with a new active medium in the form of neodymium-activated gadolinium scandium gallium garnet (GSGG:Nd³⁺), containing chromium and emitting ultrashort pulses in the case of passive mode locking. Statistical dependences of the duration, energy, and reproducibility of the output pulses on the position of a cell with a saturable absorber (dye 3274 in ethanol) in an interferometer and on the initial transmission of the cell were determined. A new resonator configuration with an asymmetric position of the active element inside an interferometer ring was used: it ensured simple emission of the lowest transverse mode without additional spatial selection. A comparison of the main parameters of the ultrashort pulses emitted by YAG and GSGG lasers demonstrated characteristic advantages of the new active medium in generation of picosecond pulses.

UDC: 621.373.826.038.825.2

PACS: 42.55.Rz, 42.60.By, 42.60.Da, 42.65.Re, 42.60.Fc, 07.60.Ly

Received: 23.11.1988

 English version: Soviet Journal of Quantum Electronics, 1990, 20:3, 228–231

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