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21 February 2020 Generation of THz frequency offset with dual-wavelength Yb:KGW laser
R. Akbari, A. Major
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Proceedings Volume 11259, Solid State Lasers XXIX: Technology and Devices; 112591U (2020) https://doi.org/10.1117/12.2542080
Event: SPIE LASE, 2020, San Francisco, California, United States
Abstract
Dual-wavelength (DW) operation of Yb:KGW laser was demonstrated by using a 1 mm-thick birefringent filter (BRF). Based on gain balancing around a single transmission peak of the filter, DW pairs with wavelength separation far smaller than the free spectral range of the filter could be generated. A series of DW pairs with wavelength separation of around 0.5 nm (Δν≈0.14 THz) and 4 nm (Δν≈1.1 THz) within the available gain bandwidth were generated. This method can be also applied with the other lasers that have broad gain bandwidth.
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R. Akbari and A. Major "Generation of THz frequency offset with dual-wavelength Yb:KGW laser", Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 112591U (21 February 2020); https://doi.org/10.1117/12.2542080
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KEYWORDS
Optical filters
Continuous wave operation
Terahertz radiation
Laser crystals
High power lasers
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