Acousto-Optic-Based Wavelength-Comb-Swept Laser for ExtendedDisplacement Measurements

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/474223.do
DOI
10.3390/s17040740
Title
Acousto-Optic-Based Wavelength-Comb-Swept Laser for ExtendedDisplacement Measurements
Description
This research was supported by the Bio & Medical Technology DevelopmentProgram of the National Research Foundation of Korea (NRF), funded bythe Korean government, MSIP (2015M3A9E2067143).
abstract
We demonstrate a novel wavelength-comb-swept laser based on two intra-cavity filters: an acousto-optic tunable filter (AOTF) and a Fabry-Perot etalon filter. The AOTF is used for the tunable selection of the output wavelength with time and the etalon filter for the narrowing of the spectral linewidth to extend the coherence length. Compared to the conventional wavelength-swept laser, the acousto-optic-based wavelength-comb-swept laser (WCSL) can extend the measureable range of displacement measurements by decreasing the sensitivity roll-off of the point spread function. Because the AOTF contains no mechanical moving parts to select the output wavelength acousto-optically, the WCSL source has a high wavenumber (k) linearity of R-2 = 0.9999 to ensure equally spaced wavelength combs in the wavenumber domain.
provenance
Made available in Cube on 2018-09-28T10:40:25Z (GMT). No. of bitstreams: 0
language
English
author
Park, Nam Su
Chun, Soo Kyung
Han, Ga-Hee
Kim, Chang-Seok
accessioned
2018-09-28T10:40:25Z
available
2018-09-28T10:40:25Z
issued
2017
citation
SENSORS(17): 4
issn
1424-8220
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/474223.do
Funder
교육부
Funding Program
BK21플러스사업(0.5)
Project ID
1345273923
Jurisdiction
Rep.of Korea
Project Name
Nano-Integrated Cogno-mechatronics Engineering
rights
openAccess
subject
laser and laser optics
swept laser
acousto-optic tunable filter
Fabry-Perot etalon filter
point spread function
interferometricdisplacement measurement
type
article


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