Semiconductor laser for use as light source in data processing d

Details Semiconductor laser for use as light source in data processing d Semiconductor laser for use as light source in data processing d

1994-04-06

1995-09-05

Bovernick, Rodney B.

Coherent light generators

Particular active media

Semiconductor

372 96, H01S 318

Patent

active

054485843

ABSTRACT:
A semiconductor laser with a semiconductor multilayer has at least one double heterostructure. There area pair of cladding layers and an active layer and, where a bandgap energy of the cladding layers is E.sub.1 and that of the active layer is E.sub.2, these bandgap energies satisfy a relation substantially E.sub.1 .gtoreq.2.times.E.sub.2. The semiconductor laser produces green SHG (second harmonic generation) light and the efficiency of producing such light is high because the cladding layers absorb substantially no SHG light.

REFERENCES:
patent: 4803690 (1989-02-01), Takiguchi et al.
patent: 4992837 (1991-02-01), Sukai et al.
patent: 5008891 (1991-04-01), Morita
By T. Furuse et al., "Internal Second Harmonic Generation In InGaAsP DH Lasers", Optics Communications, Dec. 1980, vol. 35, No. 3, pp. 413-416.
By K. Kobayashi et al., "632.7 nm CW Operation (20.degree. C.) of AlGaInP Visible Laser Diodes Fabricated on (001) 6.degree. off toward [110] GaAs Substrate", Japanese Journal of Applied Physics, Sep. 1990, vol. 29, No. 9, pp. 1669-1671.

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