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Title: Controlled-inversion-profile amplifier as soft aperture

Abstract

A new method is proposed for achieving a soft aperture in controlling the transverse distribution of the intensity of a laser beam. The method is based on the use of amplifiers with a controlled transverse distribution of the population inversion. A controlled inversion profile can be produced by reducing the population inversion as a result of auxiliary lasing excited within certain parts of the active medium of the amplifier. Experimental results are given of an investigation of an amplifier with a cylindrical neodymium-glass element (diameter 30 mm, length 320 mm) in which a controlled inversion profile is produced by stimulated emission of internal ring modes on reflection from the polished cylindrical surface of the element. The proposed method makes it possible to reduce considerably the inhomogeneity of the transverse distribution which appears as a result of diffraction by various apertures.

Authors:
; ; ; ;
Publication Date:
Research Org.:
P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow
OSTI Identifier:
6035389
Resource Type:
Journal Article
Journal Name:
Sov. J. Quant. Electron. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 9:2
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASER RADIATION; AMPLIFIERS; CONTROL; APERTURES; POPULATION INVERSION; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; OPENINGS; RADIATIONS; 420300* - Engineering- Lasers- (-1989)

Citation Formats

Brodov, M.E., Kamenets, F.F., Korobkin, V.V., Prokhorov, A.M., and Serov, R.V. Controlled-inversion-profile amplifier as soft aperture. United States: N. p., 1979. Web. doi:10.1070/QE1979v009n02ABEH008743.
Brodov, M.E., Kamenets, F.F., Korobkin, V.V., Prokhorov, A.M., & Serov, R.V. Controlled-inversion-profile amplifier as soft aperture. United States. doi:10.1070/QE1979v009n02ABEH008743.
Brodov, M.E., Kamenets, F.F., Korobkin, V.V., Prokhorov, A.M., and Serov, R.V. Thu . "Controlled-inversion-profile amplifier as soft aperture". United States. doi:10.1070/QE1979v009n02ABEH008743.
@article{osti_6035389,
title = {Controlled-inversion-profile amplifier as soft aperture},
author = {Brodov, M.E. and Kamenets, F.F. and Korobkin, V.V. and Prokhorov, A.M. and Serov, R.V.},
abstractNote = {A new method is proposed for achieving a soft aperture in controlling the transverse distribution of the intensity of a laser beam. The method is based on the use of amplifiers with a controlled transverse distribution of the population inversion. A controlled inversion profile can be produced by reducing the population inversion as a result of auxiliary lasing excited within certain parts of the active medium of the amplifier. Experimental results are given of an investigation of an amplifier with a cylindrical neodymium-glass element (diameter 30 mm, length 320 mm) in which a controlled inversion profile is produced by stimulated emission of internal ring modes on reflection from the polished cylindrical surface of the element. The proposed method makes it possible to reduce considerably the inhomogeneity of the transverse distribution which appears as a result of diffraction by various apertures.},
doi = {10.1070/QE1979v009n02ABEH008743},
journal = {Sov. J. Quant. Electron. (Engl. Transl.); (United States)},
number = ,
volume = 9:2,
place = {United States},
year = {1979},
month = {2}
}