Frequency mixing techniques

Tunable Coherent Radiation by Frequency-Mixing Techniques... 

Now several thousands of laser lines are known which span the whole spectral range from the vacuum-ultraviolet to the far-infrared region. Of particular inters are the continuously tunable lasers which may in many cases replace wavelength-selecting elements, such as spectrometers or interferometers. In combination with optical frequency-mixing techniques such continuously tunable monochromatic coherent light sources are available at nearly any desired wavelength above 100 nm. 

Some examples are given to demonstrate experimental realizations of the sum-frequency mixing technique [5.247-5.255]. 

Some examples demonstrate experimental realizations of the sum frequency mixing technique. 

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