LIGHT SOURCE, LIGHT RECEIVING/EMITTING DEVICE, AND MEASURING DEVICE

The present invention provides a new technology that suppresses reduction in output of light from a light source due to temperature change. A light source 10 comprises: a seed laser 12 which emits a seed beam having a peak wavelength falling within the near-infrared wavelength range; an optical fibe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ONODA, Yukihiro, TANIGAWA, Kentaro, ITO, Yoshiro
Format:	Patent
Sprache:	eng ; fre ; jpn
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES BASIC ELECTRIC ELEMENTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DEVICES USING STIMULATED EMISSION ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	The present invention provides a new technology that suppresses reduction in output of light from a light source due to temperature change. A light source 10 comprises: a seed laser 12 which emits a seed beam having a peak wavelength falling within the near-infrared wavelength range; an optical fiber 14 which is doped with a rare-earth element and which allows the seed beam to transmit therethrough; a first pump laser 16 which emits first excitation light that excites a rare-earth element and has a peak wavelength of λ1 at a junction temperature T; a second pump laser 18 which emits second excitation light that excites a rare-earth element and has a peak wavelength of λ2 (λ2