Near-field dynamics of broad area diode laser at very high pump levels | Zendy

Martin Hempel | Zendy; Jens W. Tomm | Zendy; M. Baeumler | Zendy; H. Konstanzer | Zendy; Jayanta Mukherjee | Zendy; Thomas Elsaesser | Zendy

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Near-field dynamics of broad area diode laser at very high pump levels

Author(s) -

Martin Hempel,

Jens W. Tomm,

M. Baeumler,

H. Konstanzer,

Jayanta Mukherjee,

Thomas Elsaesser

Publication year - 2011

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.3664745

Subject(s) - picosecond , semiconductor laser theory , diode , laser , materials science , optical pumping , optoelectronics , field (mathematics) , optics , semiconductor , atomic physics , physics , mathematics , pure mathematics

Near-field properties of the emission of broad area semiconductor diode lasers under extremely high pumping of up to ∼50 times the threshold are investigated. A transition from a gain to thermally-induced index guiding is shown under operation with single pulses of 300 ns duration. At highest output powers, catastrophic optical damage is observed which is studied in conjunction with the evolution of time-averaged filamentary near-field properties. Dynamics of the process is resolved on a picosecond time scale

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