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Precise measurement of the length by means of DFB diode and femtosecond laser

SYSNO ASEP	0335085
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Precise measurement of the length by means of DFB diode and femtosecond laser
Author(s)	Šmíd, Radek (UPT-D)_{RID, SAI} Číp, Ondřej (UPT-D)_{RID, SAI, ORCID} Lazar, Josef (UPT-D)_{RID, ORCID, SAI} Ježek, Jan (UPT-D)_{RID, ORCID, SAI} Růžička, Bohdan (UPT-D)_{RID, ORCID}
Number of authors	5
Source Title	Optical Measurement Systems for Industrial Inspection VI. (Proceedings of SPIE Vol. 7389). - Bellingham : SPIE, 2009 - ISSN 0277-786X - ISBN 978-0-8194-7672-2
Pages	739833: 1-7
Number of pages	7 s.
Action	Optical Measurement Systems for Industrial Inspection /6./
Event date	14.06.2009-18.06.2009
VEvent location	Munich
Country	DE - Germany
Event type	WRD
Language	eng - English
Country	US - United States
Keywords	Fabry-Perot ; femtosecond laser ; length etaloa ; frequaicy comb
Subject RIV	BH - Optics, Masers, Lasers
R&D Projects	GA102/09/1276 GA ČR - Czech Science Foundation (CSF)
	LC06007 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	2C06012 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	2A-1TP1/127 GA MPO - Ministry of Industry and Trade (MPO)
	FT-TA3/133 GA MPO - Ministry of Industry and Trade (MPO)
	2A-3TP1/113 GA MPO - Ministry of Industry and Trade (MPO)
	GA102/07/1179 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20650511 - UPT-D (2005-2011)
DOI	10.1117/12.827577
Annotation	Need of precise definition of the calibrated length is of great importance in industrial application in these days. Found DFB diode laser wavelength transmitted through the Fabry-Perot etalon is measured by wavelengthmeter. Train of femtosecond laser pulses produces an optical frequency spectrum (optical comb) of separate equidistant frequencies with an offset frequency. Stabilized optical comb generates a very precise frequency rule. Frequency beat between DFB laser source and the closest femtosecond laser line is detected to find the exact frequency. This procedure is done in whole DFB laser diode tuning range. Such method produce about hundred of reproductive and well defined measured points in DFB laser diode tuning range. Measured points are treated by computer algorithm. Moreover the Fabry-Perot mirror distance changes could be precisely analyzed by this method.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2010

Number of the records: 1