Double-asymmetric-structure 1.5 μ m high power laser diodes

Lauri Hallman, Boris S. Ryvkin, Eugene A. Avrutin, Antti T. Aho, Jukka Viheriälä, Mircea Guina, Juha T. Kostamovaara

Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu

3 Sitaatiot (Scopus)

Abstrakti

Design considerations for high pulsed power and brightness 1.5 μm laser emitters for laser radar applications, based on comprehensive semi-analytical theory, are presented. A strongly asymmetric waveguide design with a bulk active layer positioned very near the p-emitter interface is chosen to minimize the current-induced losses at high power while maintaining a single, broad transverse mode. Moderate to high doping of the n-side of the Optical Confinement Layer and high p-doping of the p-cladding layer are used to reduce the residual current-induced losses and the electric resistance of the structure. For pulsed room-temperature operation, short laser resonators are found to be advantageous. First experimental results are presented. An as-cleaved sample with a stripe width of90 μm and a resonator2 mm long exhibits an output power of about 18 W at a pumping current amplitude of 80 A, with 1 mm long resonators showing higher power output. Further improvements are predicted by structure optimization as well as increase in internal quantum efficiency and thermal performance.

AlkuperäiskieliEnglanti
OtsikkoProceedings of the 2019 IEEE High Power Diode Lasers and Systems Conference, HPD 2019 - Co-located with Photonex 2019
KustantajaIEEE
Sivut19-20
Sivumäärä2
ISBN (elektroninen)9781728130972
DOI - pysyväislinkit
TilaJulkaistu - 1 lokak. 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE High Power Diode Lasers and Systems Conference - Coventry, Iso-Britannia
Kesto: 9 lokak. 201910 lokak. 2019

Conference

ConferenceIEEE High Power Diode Lasers and Systems Conference
Maa/AlueIso-Britannia
KaupunkiCoventry
Ajanjakso9/10/1910/10/19

Julkaisufoorumi-taso

  • Jufo-taso 1

!!ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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