Diode laser device having a reflecting feedback element, and app

Details Diode laser device having a reflecting feedback element, and app Diode laser device having a reflecting feedback element, and app

1992-12-23

1994-07-26

Lee, John D.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 20, 372 99, 372108, H01S 313

Patent

active

053331443

ABSTRACT:
An optical device (7) for use in optical write, read, inspection or measuring apparatuses comprising a diode laser (8) for generating a radiation beam (11) and an optical system (9) for concentrating and guiding the radiation beam. The diode laser is a pulsed laser and a feedback element is arranged in the radiation path at a specific distance (d) from the diode laser. By giving the element a suitable reflection coefficient, a stabilized radiation beam is obtained. The beam direction can be varied by rendering the wavelength adjustable and by making use of a dispersive element.

REFERENCES:
patent: 4709369 (1987-11-01), Howard
patent: 4918679 (1990-04-01), Opheij et al.
patent: 5123023 (1992-06-01), Santarelli et al.
patent: 5179565 (1993-01-01), Tsuchiya et al.

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