Recording apparatus with a semiconductor laser

Details Recording apparatus with a semiconductor laser Recording apparatus with a semiconductor laser

1985-11-20

1988-02-02

Corbin, John K.

350449, G02B 2604

Patent

active

047225815

ABSTRACT:
Disclosed is a recording apparatus having a semiconductor laser producing a laser beam with Gauss distribution and an aperture stop. The aperture stop has a diameter in the direction normal to a junction plane of the semiconductor laser which is adjustable to a suitable value and a diameter in the direction parallel to the junction plane is fixed at a predetermined value. This aperture stop transmits the beam in regulated form with minimum loss of energy propagation efficiency.

REFERENCES:
patent: 4222653 (1980-09-01), Beiser
patent: 4253724 (1981-03-01), Minoura et al.
patent: 4304467 (1981-12-01), Rabedeau
patent: 4333173 (1982-06-01), Yonezawa et al.
patent: 4397527 (1983-08-01), Geyer
patent: 4538895 (1985-09-01), Higgins et al.
Lenses for Low-Order Modes, by Richard Rhyins, Laser Focus, Jun. 1974.

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