skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cascaded frequency doublers for broadband laser radiation

Abstract

A new scheme of a cascaded converter of the first harmonic of broadband cw laser radiation into the second harmonic (SH) with compensation for the group walk-off in cascades is proposed and investigated. The conditions under which high conversion coefficients of broadband ({approx}33 cm{sup -1}) single-mode fibre laser radiation with low peak power ({approx}300 W) into the SH are determined for frequency doublers based on the most promising LBO crystal. Conversion of cw radiation with an average power of 300 W and efficiency {eta} = 4.5 % into the SH is obtained in a single LBO crystal. Effect of coherent addition of SH radiation excited in different cascades is demonstrated for two- and three-stage schemes. The expected conversion efficiencies, calculated disregarding loss but taking into account real aberrations of elements, are 18 % and 38 %, respectively. The effect of pumping depletion begins to manifest itself in the third cascade of a three-stage converter; it may reduce the latter value to {approx}30 %. (nonlinear optical phenomena)

Authors:
; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:
22066632
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 42; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EFFICIENCY; HARMONIC GENERATION; LASER RADIATION; NONLINEAR PROBLEMS; PEAK LOAD; PUMPING

Citation Formats

Andreev, N F, Vlasova, K V, Davydov, V S, Kulikov, S M, Makarov, A I, Sukharev, Stanislav A, Freidman, Gennadii I, and Shubin, S V. Cascaded frequency doublers for broadband laser radiation. United States: N. p., 2012. Web. doi:10.1070/QE2012V042N10ABEH014829.
Andreev, N F, Vlasova, K V, Davydov, V S, Kulikov, S M, Makarov, A I, Sukharev, Stanislav A, Freidman, Gennadii I, & Shubin, S V. Cascaded frequency doublers for broadband laser radiation. United States. doi:10.1070/QE2012V042N10ABEH014829.
Andreev, N F, Vlasova, K V, Davydov, V S, Kulikov, S M, Makarov, A I, Sukharev, Stanislav A, Freidman, Gennadii I, and Shubin, S V. Wed . "Cascaded frequency doublers for broadband laser radiation". United States. doi:10.1070/QE2012V042N10ABEH014829.
@article{osti_22066632,
title = {Cascaded frequency doublers for broadband laser radiation},
author = {Andreev, N F and Vlasova, K V and Davydov, V S and Kulikov, S M and Makarov, A I and Sukharev, Stanislav A and Freidman, Gennadii I and Shubin, S V},
abstractNote = {A new scheme of a cascaded converter of the first harmonic of broadband cw laser radiation into the second harmonic (SH) with compensation for the group walk-off in cascades is proposed and investigated. The conditions under which high conversion coefficients of broadband ({approx}33 cm{sup -1}) single-mode fibre laser radiation with low peak power ({approx}300 W) into the SH are determined for frequency doublers based on the most promising LBO crystal. Conversion of cw radiation with an average power of 300 W and efficiency {eta} = 4.5 % into the SH is obtained in a single LBO crystal. Effect of coherent addition of SH radiation excited in different cascades is demonstrated for two- and three-stage schemes. The expected conversion efficiencies, calculated disregarding loss but taking into account real aberrations of elements, are 18 % and 38 %, respectively. The effect of pumping depletion begins to manifest itself in the third cascade of a three-stage converter; it may reduce the latter value to {approx}30 %. (nonlinear optical phenomena)},
doi = {10.1070/QE2012V042N10ABEH014829},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 10,
volume = 42,
place = {United States},
year = {2012},
month = {10}
}