Abstract
We detail the operation of a THz laser source based on non-linear stimulated polariton scattering (SPS) in Mg:LiNbO3. This system utilizes a fundamental wavelength of 1342nm to completely avoid the negative effect of free-carrier generation within high-resistivity silicon (Si) prisms used to extract THz radiation from the Mg:LiNbO3 crystal. THz power of up to 23.6μW (62.3μW when chopped at 50% duty cycle) was detected at 1.33THz, and frequency tunability across the range 1.05-2.2THz was achieved.
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