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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 11 — Jun. 1, 2008
  • pp: 1183–1185

Wavefront measurements of diode laser beams with large dynamic ranges

Yu-Kuan Lu, Szu-Ming Yeh, Shyh-Tsong Lin, Pochi Yeh, and Wood-Hi Cheng  »View Author Affiliations


Optics Letters, Vol. 33, Issue 11, pp. 1183-1185 (2008)
http://dx.doi.org/10.1364/OL.33.001183


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Abstract

We propose and demonstrate a method for the measurement of the wavefronts of high-power diode laser beams with large dynamic ranges. Our wavefront sensor consists of a movable pinhole and a wavefront-slope detector. The measurement results show that the wavefront sensor exhibits a large dynamic range of π 2 to π 2 and a high precision on the measured average wavefront slope. The wavefronts of high-power diode laser beams having large divergence angles at arbitrary locations (including near and far fields) can be reconstructed via the wavefront measurement at a given location. The amplitude and phase distributions of a laser beam could be determined from the measured optical field data using diffraction theory. The experimental measurement of the wavefront of a 980 nm diode laser beam will be presented and discussed.

© 2008 Optical Society of America

OCIS Codes
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: January 8, 2008
Revised Manuscript: March 15, 2008
Manuscript Accepted: March 26, 2008
Published: May 23, 2008

Citation
Yu-Kuan Lu, Szu-Ming Yeh, Shyh-Tsong Lin, Pochi Yeh, and Wood-Hi Cheng, "Wavefront measurements of diode laser beams with large dynamic ranges," Opt. Lett. 33, 1183-1185 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-11-1183


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