Effect of laser cavity parameters on saturation of light – current characteristics of high-power pulsed lasers

Journal Article · Fri Jul 31 00:00:00 EDT 2015 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2015V045N07ABEH015742· OSTI ID:22551211

Veselov, D A; Pikhtin, N A; Lyutetskiy, A V; Nikolaev, D N; Slipchenko, S O; Sokolova, Z N; Shamakhov, V V; Shashkin, I S; Kapitonov, V A; Tarasov, I S ^[1]

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1. Ioffe Institute, Russian Academy of Sciences, St. Petersburg (Russian Federation)

We report an experimental study of power characteristics of semiconductor lasers based on MOVPE-grown asymmetric separate-confinement heterostructures with a broadened waveguide as functions of cavity length, stripe contact width and mirror reflectivities. It is shown that at high current pump levels, the variation of the cavity parameters of a semiconductor laser (width, length and mirror reflectivities) influences the light – current (L – I) characteristic saturation and maximum optical power by affecting such laser characteristics, as the current density and the optical output loss. A model is elaborated and an optical power of semiconductor lasers is calculated by taking into account the dependence of the internal optical loss on pump current density and concentration distribution of charge carriers and photons along the cavity axis of the cavity. It is found that only introduction of the dependence of the internal optical loss on pump current density to the calculation model provides a good agreement between experimental and calculated L – I characteristics for all scenarios of variations in the laser cavity parameters. (lasers)

• OSTI ID: 22551211
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 45, Issue 7; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CHARGE CARRIERS
CONCENTRATION RATIO
CONFINEMENT
CURRENT DENSITY
LASER CAVITIES
MIRRORS
PHOTONS
PULSES
PUMPING
REFLECTIVITY
SEMICONDUCTOR LASERS
VAPOR PHASE EPITAXY
VISIBLE RADIATION
WAVEGUIDES