Abstract
A gold-coated silicon grating has been developed, enabling efficient spatial separation of broadband mid-infrared (MIR) beams with wavelengths >5 mu m from collinearly propagating, broadband, high-power light in the near-infrared (NIR) spectral range (centered at 2 mu m). The optic provides spectral filtering at high powers in a thermally robust and chromatic-dispersion-free manner such as that necessary for coherent MIR radiation sources based on parametric frequency down-conversion of femtosecond MR lasers. The suppression of a > 20 W average-power, 2 mu m driving pulse train by three orders of magnitude, while retaining high reflectivity of the broadband MIR beam, is presented. (C) 2019 Optical Society of America
Item Type: | Journal article |
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Faculties: | Physics |
Subjects: | 500 Science > 530 Physics |
ISSN: | 0146-9592 |
Language: | English |
Item ID: | 82792 |
Date Deposited: | 15. Dec 2021, 15:03 |
Last Modified: | 15. Dec 2021, 15:03 |