H. Maestre, A. Torregrosa, C. Fernández-Pousa, J. Pereda, J. Capmany
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Dual-wavelength operation of diode-pumped Cr3+:LiCaAlF6 lasers for tunable THz generation
We present a scheme for dual-wavelength operation of a diode-pumped Cr3+:LiCaAlF6 (Cr3+:LiCAF) laser with tunable frequency difference based on external optical feedback from a Littman-mounted diffraction grating. The maximum spectral separation achieved allows a frequency separation from 0 to 9 THz in the 785 nm region.