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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 10 — May. 15, 2014
  • pp: 2831–2834

Space radiation test of saturable absorber for femtosecond laser

Yoon-Soo Jang, Joohyung Lee, Seungman Kim, Keunwoo Lee, Seongheum Han, Young-Jin Kim, and Seung-Woo Kim  »View Author Affiliations


Optics Letters, Vol. 39, Issue 10, pp. 2831-2834 (2014)
http://dx.doi.org/10.1364/OL.39.002831


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Abstract

We report a space radiation test performed on a semiconductor-type saturable absorber (SA) for its use in outer space as a key mode-locking component of fiber-based femtosecond pulse lasers. Gamma-ray effects on the nonlinear transmission behavior of the SA were evaluated by configuring a pump-probe experiment with femtosecond light pulses. Test results revealed that when the total ionizing dose of gamma-ray exposure reaches 120 krad, the SA encounters a sudden failure with its modulation depth and saturation fluence deteriorating from 11% to 6% and 40 to 110μJ/cm2, respectively. On the other hand, no notable degradation was observed in its temporal response of absorption recovery.

© 2014 Optical Society of America

OCIS Codes
(320.7080) Ultrafast optics : Ultrafast devices
(320.7090) Ultrafast optics : Ultrafast lasers
(350.6090) Other areas of optics : Space optics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 11, 2014
Revised Manuscript: April 8, 2014
Manuscript Accepted: April 8, 2014
Published: May 5, 2014

Citation
Yoon-Soo Jang, Joohyung Lee, Seungman Kim, Keunwoo Lee, Seongheum Han, Young-Jin Kim, and Seung-Woo Kim, "Space radiation test of saturable absorber for femtosecond laser," Opt. Lett. 39, 2831-2834 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-10-2831

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