9B2 - The nature of the laser transition in CdS crystal at 90°K with two-photon excitation
|Author(s):||L. Kulewsky ; A. Prokhorov|
|Sponsor(s):||IEEE Lasers and Electro-Optics Society|
|Publisher:||IEEE - Institute of Electrical and Electronics Engineers, Inc.|
|Publication Date:||1 September 1966|
|Page(s):||584 - 586|
An oscillation at the wavelength 4946 A in cadmium sulfide crystal is produced by two-photon excitation by ruby laser radiation. A two-photon absorption coefficient is measured at the wavelength 6943 A. The two-photon absorption coefficient is proportional to the light beam intensity and is equal to 1.0 cm-1at 50 W/cm2. The excitation lifetime in excited state is 10-9to 10-11seconds. It is proved that the oscillation in cadmium sulfide is due to the coupled excitations.