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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 7 — Mar. 26, 2012
  • pp: 7480–7487

Alternative laser system for cesium magneto-optical trap via optical injection locking to sideband of a 9-GHz current-modulated diode laser

Wenting Diao, Jun He, Zhi Liu, Baodong Yang, and Junmin Wang  »View Author Affiliations


Optics Express, Vol. 20, Issue 7, pp. 7480-7487 (2012)
http://dx.doi.org/10.1364/OE.20.007480


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Abstract

By optical injection of an 852-nm extended-cavity diode laser (master laser) to lock the + 1-order sideband of a ~9-GHz-current-modulated diode laser (slave laser), we generate a pair of phase-locked lasers with a frequency difference up to ~9-GHz for a cesium (Cs) magneto-optical trap (MOT) with convenient tuning capability. For a cesium MOT, the master laser acts as repumping laser, locked to the Cs 6S1/2 (F = 3) - 6P3/2 (F’ = 4) transition. When the + 1-order sideband of the 8.9536-GHz-current-modulated slave laser is optically injection-locked, the carrier operates on the Cs 6S1/2 (F = 4) - 6P3/2 (F’ = 5) cooling cycle transition with −12 MHz detuning and acts as cooling/trapping laser. When carrying a 9.1926-GHz modulation signal, this phase-locked laser system can be applied in the fields of coherent population trapping and coherent manipulation of Cs atomic ground states.

© 2012 OSA

OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(140.3520) Lasers and laser optics : Lasers, injection-locked
(270.0270) Quantum optics : Quantum optics
(140.3518) Lasers and laser optics : Lasers, frequency modulated

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 16, 2011
Revised Manuscript: February 3, 2012
Manuscript Accepted: March 4, 2012
Published: March 19, 2012

Citation
Wenting Diao, Jun He, Zhi Liu, Baodong Yang, and Junmin Wang, "Alternative laser system for cesium magneto-optical trap via optical injection locking to sideband of a 9-GHz current-modulated diode laser," Opt. Express 20, 7480-7487 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-7-7480


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