Method for driving a wavelength changeable light source apparatu

Details Method for driving a wavelength changeable light source apparatu Method for driving a wavelength changeable light source apparatu

1997-03-11

1998-09-15

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 18, 372 27, H01S 310

Patent

active

058090479

ABSTRACT:
A light source apparatus includes a light source, a mode selecting unit, a light source control unit and a mode selection control unit. An oscillation mode of the light source is switchable between a first mode under a first stimulated condition and a second mode under a second stimulated condition, and an oscillation wavelength of the light source is changeable. The mode selecting unit selects between oscillation light in the first mode and oscillation light in the second mode emitted from the light source, and the mode selecting unit can change the mode to be selected between the first mode and the second mode. The light source control unit modulates the oscillation mode of the light source between the first mode and the second mode in accordance with a modulation signal and changes the oscillation wavelength of the light in the unselected mode to set this wavelength to a desired value, in response to an instruction from equipment connected to the light source apparatus, while repressing fluctuation of the oscillation wavelength of the light in the selected mode. The mode selection control unit controls the mode selecting unit to switch the mode to be selected by the mode selecting unit to the mode of the light whose oscillation wavelength has been set to the desired value by the light source control unit.

REFERENCES:
patent: 5586131 (1996-12-01), Ono et al.
patent: 5659560 (1997-08-01), Ouchi et al.

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