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Title: Integrated high-order surface diffraction gratings for diode lasers

Abstract

High-order surface diffraction gratings acting as a distributed Bragg reflector (DBR) in mesa stripe semiconductor lasers (λ = 1030 nm) have been studied theoretically and experimentally. Higher order interfering radiation modes (IRMs), which propagate off the plane of the waveguide, have been shown to have a crucial effect on the reflection and transmission spectra of the DBR. The decrease in the reflectivity of the DBR in response to the increase in the diffraction efficiency of these modes may reach 80% and more. According to theoretical analysis results, the intensity of the higher order IRMs is determined by the geometry of the DBR groove profile. Experimental data demonstrate that the noncavity modes are responsible for parasitic light leakage losses in the laser cavity. It has been shown that, in the case of nonoptimal geometry of the grating groove profile, the overall external differential quantum efficiency of the parasitic laser emission may exceed 45%, which is more than half of the laser output power. The optimal geometry of the DBR groove profile is trapezoidal, with the smallest possible lower base. Experimental evidence has been presented that this geometry considerably reduces the power of the higher order IRMs and minimises the parasitic lightmore » leakage loss. (lasers)« less

Authors:
; ; ; ; ; ; ;  [1]
  1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg (Russian Federation)
Publication Date:
OSTI Identifier:
22551125
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 45; Journal Issue: 12; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BRAGG REFLECTION; DIFFRACTION GRATINGS; EMISSION; EXPERIMENTAL DATA; LASER CAVITIES; LEAKS; LIGHT TRANSMISSION; QUANTUM EFFICIENCY; SEMICONDUCTOR LASERS; SPECTRA; VISIBLE RADIATION; WAVEGUIDES

Citation Formats

Zolotarev, V V, Leshko, A Yu, Pikhtin, N A, Slipchenko, S O, Sokolova, Z N, Lubyanskiy, Ya V, Voronkova, N V, and Tarasov, I S. Integrated high-order surface diffraction gratings for diode lasers. United States: N. p., 2015. Web. doi:10.1070/QE2015V045N12ABEH015871.
Zolotarev, V V, Leshko, A Yu, Pikhtin, N A, Slipchenko, S O, Sokolova, Z N, Lubyanskiy, Ya V, Voronkova, N V, & Tarasov, I S. Integrated high-order surface diffraction gratings for diode lasers. United States. doi:10.1070/QE2015V045N12ABEH015871.
Zolotarev, V V, Leshko, A Yu, Pikhtin, N A, Slipchenko, S O, Sokolova, Z N, Lubyanskiy, Ya V, Voronkova, N V, and Tarasov, I S. Thu . "Integrated high-order surface diffraction gratings for diode lasers". United States. doi:10.1070/QE2015V045N12ABEH015871.
@article{osti_22551125,
title = {Integrated high-order surface diffraction gratings for diode lasers},
author = {Zolotarev, V V and Leshko, A Yu and Pikhtin, N A and Slipchenko, S O and Sokolova, Z N and Lubyanskiy, Ya V and Voronkova, N V and Tarasov, I S},
abstractNote = {High-order surface diffraction gratings acting as a distributed Bragg reflector (DBR) in mesa stripe semiconductor lasers (λ = 1030 nm) have been studied theoretically and experimentally. Higher order interfering radiation modes (IRMs), which propagate off the plane of the waveguide, have been shown to have a crucial effect on the reflection and transmission spectra of the DBR. The decrease in the reflectivity of the DBR in response to the increase in the diffraction efficiency of these modes may reach 80% and more. According to theoretical analysis results, the intensity of the higher order IRMs is determined by the geometry of the DBR groove profile. Experimental data demonstrate that the noncavity modes are responsible for parasitic light leakage losses in the laser cavity. It has been shown that, in the case of nonoptimal geometry of the grating groove profile, the overall external differential quantum efficiency of the parasitic laser emission may exceed 45%, which is more than half of the laser output power. The optimal geometry of the DBR groove profile is trapezoidal, with the smallest possible lower base. Experimental evidence has been presented that this geometry considerably reduces the power of the higher order IRMs and minimises the parasitic light leakage loss. (lasers)},
doi = {10.1070/QE2015V045N12ABEH015871},
journal = {Quantum Electronics (Woodbury, N.Y.)},
number = 12,
volume = 45,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 2015},
month = {Thu Dec 31 00:00:00 EST 2015}
}