Optical-fiber-tip temperature control system for fiber-coupled laser modules in medical equipment

An optical-fiber-tip temperature control device embedded into the power-supply unit of high-power laser diodes and modules (with fiber-optic output) used in medical laser equipment is proposed. As the sensing element, a III–V mid-infrared photodiode developed at the Ioffe Physical-Technical Institut...

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Veröffentlicht in:Semiconductors (Woodbury, N.Y.) N.Y.), 2014, Vol.48 (1), p.129-134
Hauptverfasser: Aleksandrov, S. E., Gavrilov, G. A., Sotnikova, G. Yu, Ter-Martirosyan, A. L.
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Sprache:eng
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Zusammenfassung:An optical-fiber-tip temperature control device embedded into the power-supply unit of high-power laser diodes and modules (with fiber-optic output) used in medical laser equipment is proposed. As the sensing element, a III–V mid-infrared photodiode developed at the Ioffe Physical-Technical Institute is chosen from the photodiode class whose parameters are optimal for developing multipurpose thermal-radiation detectors (pyrometric sensors). The developed device allows temperature control at the working tip of the optical fiber of the laser “scalpel” in the range of 600–1100°C with an error no worse than 1% for a response time of 1 ms. The device has digital and analog temperature-signal outputs, which can be used to control the laser pump current, thus extending the functionality of medical laser equipment, increasing its efficiency, safety, and service life.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782614010047