WAVELENGTH CONVERSION LASER DEVICE

PROBLEM TO BE SOLVED: To provide a wavelength conversion laser device that minimizes a semiconductor laser driving current or maximizes light output intensity, even when an environment temperature is changed. SOLUTION: When the semiconductor laser driving current I is controlled so that the output l...

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Bibliographische Detailangaben
1. Verfasser:	FUKUSHI ICHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DEVICES USING STIMULATED EMISSION ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a wavelength conversion laser device that minimizes a semiconductor laser driving current or maximizes light output intensity, even when an environment temperature is changed. SOLUTION: When the semiconductor laser driving current I is controlled so that the output light intensity P is kept at a predetermined value Po, the semiconductor laser driving current I is monitored. When the current I becomes equal to or more than a predetermined value ΔI, the temperature of a substrate, on which a housing which houses the semiconductor laser and a part of polarization holding type optical fiber therein, and the polarization holding type optical fiber are disposed, is tuned so that the semiconductor layer driving current I is minimized. COPYRIGHT: (C)2011,JPO&INPIT