Semiconductor laser beam collimator

Details Semiconductor laser beam collimator Semiconductor laser beam collimator

1984-03-26

1986-03-11

Corbin, John K.

350 9618, 350 9631, G02B 618, G02B 632

Patent

active

045751943

ABSTRACT:
An improved collimating and conversion means is provided in a single system component that can be easily formed in a cost effective manner to convert an elliptically shaped collimated beam into a circular beam. The single component of this invention is a semiconductor laser beam collimator comprising means for collimating an output beam of radiation emitted from a semiconductor laser having a substantially elliptical cross sectional configuration and converting the emitted beam of radiation into a beam of circular cross sectional configuration, the means characterized by consisting of a graded-index (GRIN) rod or fiber with one end of the rod being beveled at an angle. The length of the GRIN rod bevel and the bevel angle are chosen according to the particular diameter and optical power of the emitted beam of the semiconductor laser.

REFERENCES:
patent: 3894789 (1975-07-01), Kobayashi et al.
patent: 4025157 (1977-05-01), Martin
patent: 4333173 (1982-06-01), Yonezawa et al.
W. Streifer et al, "Analytic Solution of Ray Equations In . . . Media, Part 1: Meridional Rays", Applied Optics, vol. 10(4), pp. 769-775 (4/71).
K. B. Paxton et al, "Analytic Solution of Ray Equations . . . Guiding Media, Part 2: Skew Rays", Applied Optics, vol. 10(5), pp. 1164-1171 (5/71).
K. B. Paxton et al, "Aberrations & Design of Graded-Index (GRIN) Rods Used As Image Relays", Applied Optics, vol. 10(9), pp. 2090-96 (9/71).

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