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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 4, Iss. 10 — Oct. 1, 2006
  • pp: 586–588

Definition and measurement of the beam propagation factor M2 for chromatic laser beams

Tao Fang, Xin Ye, Jinfu Niu, and Jianqiu Xu  »View Author Affiliations


Chinese Optics Letters, Vol. 4, Issue 10, pp. 586-588 (2006)


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Abstract

The concept of the beam propagation factor M2 is extended for chromatic laser beams. The definition of the beam propagation factor can be generalized with the weighted effective wavelength. Using the new definition of factor M2, the propagation of chromatic beams can be analyzed by the beam propagation factor M2 as same as that of monochromatic beams. A simple method to measure the chromatic beam factor M2 is demonstrated. The chromatic factor M2 is found invariable while the laser beam propagates through the dispersion-free ABCD system.

© 2006 Chinese Optics Letters

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(260.2030) Physical optics : Dispersion
(350.5500) Other areas of optics : Propagation

Citation
Tao Fang, Xin Ye, Jinfu Niu, and Jianqiu Xu, "Definition and measurement of the beam propagation factor M2 for chromatic laser beams," Chin. Opt. Lett. 4, 586-588 (2006)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-4-10-586

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