Probe having optical fiber for laterally directing laser beam

Details Probe having optical fiber for laterally directing laser beam Probe having optical fiber for laterally directing laser beam

1993-07-02

1995-06-27

Gonzalez, Frank

Optical waveguides

With optical coupler

Input/output coupler

385901, 385 47, 385 39, 128 6, 606 7, G02B 626

Patent

active

054286999

ABSTRACT:
An improved optical fiber for laterally directing a laser beam having a waveguide including a tip for communicating electromagnetic radiation in a propagation direction to the tip of the waveguide, a transmitting surface on the tip of the waveguide, a reflecting surface on the tip of the waveguide for internally reflecting electromagnetic radiation communicated by the waveguide in a direction lateral to the propagation direction toward a particular area on the transmitting surface, and wherein the particular area and the reflecting surface are disposed so that substantially all electromagnetic radiation reflected by the reflecting surface is incident on the particular area at below a critical angle for transmission through the transmitting surface in the lateral direction. By preventing electromagnetic radiation from being incident on the transmitting surface above a critical angle, the present invention prevents internal reflection off the transmitting surface and improves the efficiency of the laterally directing probe.

REFERENCES:
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patent: 4566438 (1986-01-01), Liese et al.
patent: 4620547 (1986-11-01), Boebel
patent: 4669467 (1987-06-01), Willett et al.
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patent: 4832979 (1989-05-01), Hoshino
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patent: 5000752 (1991-03-01), Hoskin et al.
patent: 5041121 (1991-08-01), Wondrazek et al.
patent: 5093877 (1992-03-01), Aita et al.
patent: 5253312 (1993-10-01), Payne et al.

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