We introduce a CW two-color Ti:sapphire laser for terahertz spectroscopic applications. The laser provides two parallel beams at independently tunable wavelengths allowing one to select a difference frequency in the range from below 20 GHz to 50 THz. The laser is pumped by a single 6-W pump beam in order to keep the setup as simple as possible. Under these conditions, output powers of 150 mW per beam in the gain-maximum region are achieved.
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Siebe et al. (1999) studied this question.
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