Space radiation test of saturable absorber for femtosecond laser

Yoon Soo Jang; Joohyung Lee; Seungman Kim; Keunwoo Lee; Seongheum Han; Young Jin Kim; Seung Woo Kim

doi:10.1364/OL.39.002831

Space radiation test of saturable absorber for femtosecond laser

Yoon Soo Jang, Joohyung Lee, Seungman Kim, Keunwoo Lee, Seongheum Han, Young Jin Kim, Seung Woo Kim

Dept. of Mechanical System and Design Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

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 110 μJ?cm2, respectively. On the other hand, no notable degradation was observed in its temporal response of absorption recovery.

Original language	English
Pages (from-to)	2831-2834
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	10
DOIs	https://doi.org/10.1364/OL.39.002831
State	Published - 15 May 2014

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title = "Space radiation test of saturable absorber for femtosecond laser",

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 110 μJ?cm2, respectively. On the other hand, no notable degradation was observed in its temporal response of absorption recovery.",

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AU - Jang, Yoon Soo

AU - Lee, Joohyung

AU - Kim, Seungman

AU - Lee, Keunwoo

AU - Han, Seongheum

AU - Kim, Young Jin

AU - Kim, Seung Woo

PY - 2014/5/15

Y1 - 2014/5/15

N2 - 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 110 μJ?cm2, respectively. On the other hand, no notable degradation was observed in its temporal response of absorption recovery.

AB - 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 110 μJ?cm2, respectively. On the other hand, no notable degradation was observed in its temporal response of absorption recovery.

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Space radiation test of saturable absorber for femtosecond laser

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