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Updated: Feb 6, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
Tunable and passively Q-switched laser operation of Nd,Lu:CaF2 disordered crystal
Abstract:
We report the first demonstration, to the best of our knowledge, of tunable and Q-switched lasers based on diode-pumped Nd,Lu:CaF2 disordered crystal. A continuous tuning range of approximately 32 nm (1047-1079 nm) was obtained for tunable operations. A passively Q-switched laser was successfully achieved using a Cr4+:YAG as a saturable absorber. The shortest pulse width of 275 ns was obtained with a repetition rate of 1.85 kHz and corresponding peak power and single pulse energy of 189 W and 51.9 μJ, respectively.
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