External digital power stabilization system for levitated optomechanics sensor

Xia Wang; Xunmin Zhu; Nan Li; Mengzhu Hu; Wenqiang Li; Xingfan Chen; Huizhu Hu

doi:10.1117/12.2601383

9 October 2021 External digital power stabilization system for levitated optomechanics sensor

Xia Wang, Xunmin Zhu, Nan Li, Mengzhu Hu, Wenqiang Li, Xingfan Chen, Huizhu Hu

Proceedings Volume 11905, Quantum and Nonlinear Optics VIII; 1190513 (2021) https://doi.org/10.1117/12.2601383
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

Levitated microspheres have enabled a wide variety of precision sensing applications which have caught great attentions in recent years. Optical tweezers technology is one of the most important methods of microspheres levitation. The stability of laser power directly affects the microspheres levitation and the precision of the measurement. This paper discusses the major factors of power stabilization in semiconductor laser. A PID-controlled model is used to control the feedback on the laser. The system mode is established after the analyzing of the characteristic of the model parameters. The experiment is demonstrated with a commercial semiconductor laser. With the external power stabilization module a 16dB laser power stability control is achieved at the relaxation oscillation, and the long-term stability is improved from 3% to 0.4%.

Citation Download Citation

Xia Wang, Xunmin Zhu, Nan Li, Mengzhu Hu, Wenqiang Li, Xingfan Chen, and Huizhu Hu "External digital power stabilization system for levitated optomechanics sensor", Proc. SPIE 11905, Quantum and Nonlinear Optics VIII, 1190513 (9 October 2021); https://doi.org/10.1117/12.2601383

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available