Laser applications and other topics in quantum electronics

Integrated-optical amplifier made of solid-state active materials

V. A. Kozlov, A. S. Svakhin, V. V. Ter-Mikirtychev

A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow

Abstract: A new integrated-optical amplifier, based on the use of a passive waveguide on a substrate made of an active material, is proposed. The amplification involves an evanescent (in a transverse direction) wave propagating in the substrate. An experimental investigation is reported of a planar amplifier with a substrate made of an LiF crystal containing F₂^– colour centres and a fused quartz film, 1.9 μm thick. The results indicate that the gain can be up to 10 dB for 1.15 μm signal radiation when the crystal is pulse-pumped with 1.064 μm radiation.

PACS: 42.60.Da, 42.82.Et

Received: 28.10.1994

 English version: Quantum Electronics, 1995, 25:8, 826–827

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