0434166 - ÚPT 2015 RIV US eng C - Conference Paper (international conference)
Šmíd, Radek - Čížek, Martin - Mikel, Břetislav - Lazar, Josef - Číp, Ondřej
Suppression of frequency noise of single mode laser with unbalanced fiber interferometer for subnanometer interferometry.
Optical Micro- and Nanometrology V. (Proceedings of SPIE 9132). Bellingham: SPIE, 2014, 913212:1-11. ISSN 0277-786X.
[Optical Micro- and Nanometrology /5./. Brussels (BE), 15.04.2014-17.04.2014]
R&D Projects: GA ČR(CZ) GPP102/12/P962; GA MŠMT(CZ) LO1212; GA MŠMT EE2.4.31.0016
Institutional support: RVO:68081731
Keywords : lasers * interferometers * interferometry * laser sources * integrated optics * Michelson interferometer * modulation
Subject RIV: BH - Optics, Masers, Lasers

We present a method of noise suppression of laser diodes by unbalanced Michelson fiber interferometer. The unstabilized laser source is represented by compact planar waveguide external cavity laser module ORION (Redfern Integrated Optics, Inc.) working at 1040.57 nm with < 3 kHz linewidth. We built Michelson interferometer with 1 km long arm based on SMF-28 fiber spool to suppress the frequency noise by fast PI servo-loop up to 33 kHz of laser injection current modulation. We were able to decrease the noise level by −60 dBc/Hz up to 1.5 kHz noise frequency of the laser.
Permanent Link: http://hdl.handle.net/11104/0238302