Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 74, Issue 6, Pages 553-557Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s003400200862
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We demonstrate an optical limiter for ultra-short (similar to 100-fs) laser pulses. The device has a dynamic range (= damage energy/ onset-of-limiting energy) of more than 10000 and an onset-of-limiting energy of only similar to 10nJ. The output-pulse energy is kept below 1.3 muJ. The limiting mechanism is based on two-photon absorption and refractive nonlinearities in a 20-mm piece of ZnSe. We discuss the importance of the different nonlinearities, damage issues, and guidelines for the construction of the device.
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