Determination of Scale Nonlinearity in a Laser Interferometer

0205380 - UPT-D 20010020 RIV US eng C - Conference Paper (international conference)
Číp, Ondřej - Petrů, František
Determination of Scale Nonlinearity in a Laser Interferometer.
Proceedings of the 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proc. SPIE 4356). Washington: SPIEThe International Society for Optical Engineering, 2001 - (Peřina, J.; Hrabovský, M.; Křepelka, J.), s. 139-146. ISBN 0-8194-4047-7. ISSN 0277-786X.
[SPIE: Wave and Quantum Aspects of Contemporary Optics. Velké Losiny (CZ), 12.09.2000-15.09.2000]
R&D Projects: GA ČR GA101/98/P270; GA AV ČR IAA2065803; GA AV ČR IAB2065001
Institutional research plan: CEZ:AV0Z2065902
Keywords : single-frequency laser * optical resonator
Subject RIV: BH - Optics, Masers, Lasers

In the paper causes of nonlinearity of a laser interferometer with a single-frequency laser and detection system with two signals in quadrarute are described. Several methods of nonlinearity measurement are presented. Experimentally was tested a method with a linear mechanical shift and a method of linearity measuremont using optical resonator. When using linearity compensation by means of a PC program, a deviation from linearity in limits of ń0.5 nm for the linear mechanical shift method was achieved. The preliminary results recorded during the linearity measurement with the optical resonator are below the limit of ń1,0 nm.
Permanent Link: http://hdl.handle.net/11104/0100994