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Brief Communications

Self-defocusing of He–Ne laser radiation as a result of thermoelastic deformations of a reflecting surface

A. A. Golubtsov, N. F. Pilipetskiĭ, A. N. Sudarkin, V. V. Shkunov


Abstract: Theoretical and experimental investigations were made of the efficiency of self-defocusing of cw He–Ne laser radiation as a result of thermoelastic deformation of a specularly reflecting surface of a strongly absorbing material. The divergence of a focused single-mode beam of ~20 mW power after reflection from a deformed ebonite surface was thirty times higher than the diffraction limit.

UDC: 621.373.029.7.001.5

PACS: 42.65.Jx, 62.20.Fe

Received: 28.07.1980

 English version: Soviet Journal of Quantum Electronics, 1981, 11:2, 218–220

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