Compact wavelength monitor for remote sensing applications suitable to precisely measure the wavelength of individual laser pulses

Autor:	Noble M. Johnson, Edward J. Burlbaw, Peter Kiesel, Chris J. Urbina, Joerg Martini, Tobias Staudt
Rok vydání:	2013
Předmět:	Materials science business.industry Detector Physics::Optics Photodetector Laser Ray law.invention Wavelength Optical coating Optics law Fiber laser Optoelectronics business Tunable laser
Zdroj:	SPIE Proceedings.
ISSN:	0277-786X
DOI:	10.1117/12.2017959
Popis:	A compact and fast-response wavelength monitor is described that can determine the wavelength of individual laser pulses with a resolution of a few pm. It combines a position-sensitive photo detector with an optical coating that converts the wavelength information of the incident light into a spatial intensity distribution on the photo detector. Differential read-out of the photo detector is used to determine the centroid of this distribution. Wavelength change between individual laser pulses is detected as a shift of the centroid of the spatial light distribution on the detector. The wavelength monitor is demonstrated with results from a wavelength-tunable fiber laser that can produce randomly accessible sequences of laser pulses.
Databáze:	OpenAIRE
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