Method to Remove Tilt-to-Length Coupling Caused by Interference of Flat-Top Beam and Gaussian Beam

Method to Remove Tilt-to-Length Coupling Caused by Interference of Flat-Top Beam and Gaussian Beam

We discuss the tilt-to-length (TTL) coupling noise caused by interference between a flat-top beam and a Gaussian beam. Several physical models are presented to research the effects of non-diffracted and diffracted beams on TTL noise. A special case that can remove TTL coupling noise is discovered an...

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Veröffentlicht in:Applied sciences 2019-10, Vol.9 (19), p.4112
Hauptverfasser: Zhao, Ya, Wang, Zhi, Li, Yupeng, Fang, Chao, Liu, Heshan, Gao, Huilong
Format: Artikel
Sprache:eng
Schlagworte:
Accuracy
Aperture
Electric fields
gaussian beam
Gaussian beams (optics)
interference
Interferometry
laser interferometer
Lasers
LISA (antenna)
Noise
Sensors
Simulation
Theoretical analysis
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Zusammenfassung:We discuss the tilt-to-length (TTL) coupling noise caused by interference between a flat-top beam and a Gaussian beam. Several physical models are presented to research the effects of non-diffracted and diffracted beams on TTL noise. A special case that can remove TTL coupling noise is discovered and is verified via both theoretical analysis and numerical simulations. The proposed case could provide desirable suggestions for the construction of high-precision interferometers such as the Laser Interferometer Space Antenna (LISA), Taiji program, or other interferometry systems.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9194112