Optical system for semiconductor laser

Details Optical system for semiconductor laser Optical system for semiconductor laser

1982-05-24

1986-01-14

Corbin, John K.

Coherent light generators

Particular component circuitry

Optical pumping

350432, 372101, G02B 304

Patent

active

045642680

ABSTRACT:
An optical system for focusing a light beam emitted from a semiconductor laser is disclosed which comprises a lens of a numerical aperture NA satisfying a relation ##EQU1## (where .lambda. and .DELTA.Z indicate a laser wavelength of and an astigmatic focal distance in the semiconductor laser, respectively) to make the wave front aberration of a light beam emerging from the lens smaller than or equal to .lambda./4, thereby correcting astigmatism in the semiconductor laser.

REFERENCES:
patent: 4253735 (1981-03-01), Kawamura et al.
patent: 4318594 (1982-03-01), Hanada
patent: 4425655 (1984-01-01), Fisli

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