Optical source comprising a semiconductor laser and optical mean

Details Optical source comprising a semiconductor laser and optical mean Optical source comprising a semiconductor laser and optical mean

1979-07-09

1981-12-22

Corbin, John K.

350162R, G02B 532

Patent

active

043067638

ABSTRACT:
An optical source comprising a semiconductor laser having an emissive junction and optical means for the anamorphosis of the beam emitted by said laser. The optical means comprise a concave holographic diffraction grating. The location of the recording sources of said grating and of the semiconductor laser and their wavelength are such that said grating makes a stigmatic image of said laser with a good aplanetism. The angle of diffraction is selected so as to reduce the non-isotropy of the beam emitted by the semi-conductor laser.

REFERENCES:
patent: 3628849 (1971-12-01), Wibert
patent: 3894789 (1975-07-01), Kobayashi et al.
patent: 3930728 (1976-01-01), Pieuchard et al.
patent: 3985443 (1976-12-01), Danielsson et al.
IBM Technical Disclosure Bulletin, vol. 15, No. 7, (Dec. 1972), pp. 2082-2083, "Reducing Beamspread in Junction Lasers".
Dahlbacka et al., "Off-Plane Stigmatic Imaging with Sperical Concave Gratings: Experimental Verification", Applied Optics, vol. 16, No. 2, Feb. 1977.

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