Lasers, Fiber Optics, and Communications

Locking distributed feedback laser diode frequency to gas absorption lines based on genetic programming

[+] Author Affiliations
Wei Quan, Guanghui Li, Zishan Fang, Yueyang Zhai, Xinyi Li, Feng Liu

Beihang University, Science and Technology on Inertia Laboratory, and Opto-Electronics Engineering, Room B603, Zhichun Road, Haidian District, Beijing, China

Opt. Eng. 56(1), 016106 (Jan 06, 2017). doi:10.1117/1.OE.56.1.016106
History: Received August 8, 2016; Accepted December 8, 2016
Text Size: A A A

Abstract.  Distributed feedback laser is widely used as the pump beam and probe beam in atomic physical and quantum experiments. As the frequency stability is a vital characteristic to the laser diode in these experiments, a saturated absorption frequency stabilization method assisted with the function of current and frequency is proposed. The relationship between the current and frequency is acquired based on the genetic programming (GP) algorithm. To verify the feasibility of the method, the frequency stabilization system is comprised of two parts that are modeling the relation between the current and frequency by GP and processing the saturated absorption signal. The results of the frequency stabilization experiment proved that this method can not only narrow the frequency searching range near the atomic line center but also compensate for the phase delay between the saturated absorption peak and the zero crossing point of the differential error signal. The reduced phase delay increases the locking probability and makes the wavelength drift only 0.015  pm/h, which converted to frequency drift is 7  MHz/h after frequency locking on the Rb absorption line.

Figures in this Article
© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Wei Quan ; Guanghui Li ; Zishan Fang ; Yueyang Zhai ; Xinyi Li, et al.
"Locking distributed feedback laser diode frequency to gas absorption lines based on genetic programming", Opt. Eng. 56(1), 016106 (Jan 06, 2017). ; http://dx.doi.org/10.1117/1.OE.56.1.016106


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.