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Mode-hop-free electro-optically tuned external-cavity diode laser using volume Bragg grating and PLZT ceramic |
Optics Express, Vol. 19, Issue 18, pp. 17244-17249 (2011)
http://dx.doi.org/10.1364/OE.19.017244
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Abstract
We present a novel electro-optically tuned external-cavity diode laser (ECDL) that utilizes a volume Bragg grating (VBG) as the frequency selective feedback element and a piece of high electro-optic coefficient Lead Lanthanum Zirconate Titanate (PLZT) transparent ceramic as the frequency tuning element. By adjusting the voltage applied onto the PLZT, a single-mode frequency tuning range of 2.5GHz without mode hoping is achieved. The laser wavelength is around 810.0nm with the line-width of 19MHz and the side mode suppression ratio (SMSR) of 37dB. The advantages of combining a VBG and PLZT transparent electro-optic ceramic is that the laser frequency can be tuned finely and rapidly in a range of longitudinal mode spacing without mode hoping. Moreover, the wide-range coarse frequency tuning of 32.7 GHz can also be realized by changing the angle of incident light beam.
© 2011 OSA
OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(140.2020) Lasers and laser optics : Diode lasers
(160.2100) Materials : Electro-optical materials
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: May 5, 2011
Revised Manuscript: July 14, 2011
Manuscript Accepted: July 22, 2011
Published: August 18, 2011
Citation
Li Shen, Qing Ye, Haiwen Cai, and Ronghui Qu, "Mode-hop-free electro-optically tuned external-cavity diode laser using volume Bragg grating and PLZT ceramic," Opt. Express 19, 17244-17249 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-18-17244
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References
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