LIGHT SOURCE DEVICE, MEASUREMENT DEVICE, AND ENCODER

• Main Author: KAMIYA SABURO
• Format: Patent
• Language: English; Japanese
• Published: 06.10.2016
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BASIC ELECTRIC ELEMENTS; CINEMATOGRAPHY; 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; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; MATERIALS THEREFOR; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORIGINALS THEREFOR; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; TARIFF METERING APPARATUS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TESTING

PROBLEM TO BE SOLVED: To provide a light source device having an output wavelength that is the same as gas laser having high frequency accuracy of output light and outputting a high power laser beam.SOLUTION: A light source device includes: a first wavelength-variable laser 10 for outputting first light; a second wavelength-variable laser 12 for outputting second light; a sum frequency generation module 16 for generating third light that is sum frequency of the first light and the second light as output light; and a wavelength stabilizer 25 for stabilizing the output wavelength of the first wavelength-variable laser 10 and the output wavelength of the second wavelength-variable laser 12, based on one of the first light and second light and the third light.SELECTED DRAWING: Figure 4 【課題】出力光の周波数確度が高いガスレーザと同一の出力波長を有し、かつハイパワーなレーザ光を出射する光源装置を提供する。【解決手段】光源装置は、第１の光を出力する第１波長可変レーザ１０と、第２の光を出力する第２波長可変レーザ１２と、第１の光と第２の光との和周波である第３の光を出力光として発生する和周波発生モジュール１６と、第１の光及び第２の光の一方と、第３の光と、に基づいて、第１波長可変レーザ１０の出力波長と、第２波長可変レーザ１２の出力波長とを安定化させる波長安定化装置２５と、を備えている。【選択図】図４