Presently, an all-solid-state laser in this spectral range was obtained by frequency conversion, such as frequency-doubling, sum frequency, stimulated or Ramanfrequency-shifted.
目前，该波段的全固态激光光源主要是利用频率变换技术，通过倍频、和频、受激拉曼频移的方法来获得。
2
CARS arrangement for measurement of Ramanfrequency shift has been established. The frequency shifts and the shape change in nitrogen and nitrobenzene gas-liquid phase changes have been measured.
Raman processes involve light interacting with the vibrational excitations of molecules making up the medium; as a result, the photons of light lose or gain energy, which changes their frequency.