Abstract
A tunable coherent radiation source in the 5-μ region has been obtained by mixing a spin-flip Raman (SFR) laser with a 10.6-μ TEA laser. The sum frequency, tunable from 5.47 to 5.79 μ, is obtained by mixing the two beams in a crystal of tellurium oriented at the phase-match angle. Output peak powers of approximately a few watts are obtained in this wavelength range.
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