MID-INFRARED LIGHT SOURCE, AND INFRARED LIGHT ABSORPTION ANALYZER USING THE SAME

MID-INFRARED LIGHT SOURCE, AND INFRARED LIGHT ABSORPTION ANALYZER USING THE SAME

PROBLEM TO BE SOLVED: To provide a light source which emits light in a mid-infrared region having a wavelength of 4 μm band where the absorption becomes strongest in many environmental gases.SOLUTION: A mid-infrared light source includes a first laser for generating first excitation light, a second...

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Bibliographische Detailangaben
Hauptverfasser: TADANAGA OSAMU, YANAGAWA TSUTOMU, MAGARI KATSUAKI, YUBE MASAO, UMEKI TAKESHI
Format: Patent
Sprache:eng
Schlagworte:
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
FREQUENCY-CHANGING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
TESTING
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a light source which emits light in a mid-infrared region having a wavelength of 4 μm band where the absorption becomes strongest in many environmental gases.SOLUTION: A mid-infrared light source includes a first laser for generating first excitation light, a second laser for generating second excitation light, and a wavelength conversion element into which the first excitation light and the second excitation light are input, and which is made of a nonlinear optical crystal for outputting conversion light by difference frequency generation. The first laser can vary a wavelength of the first exciting light in a wavelength range between 0.97 to 1.04 μm, the second laser outputs the second excitation light having an arbitrary wavelength between 1.25 to 1.36 μm, and the wavelength conversion element outputs a mid-infrared light having a wavelength between 3.5 to 5.8 μm as conversion light.