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
Volume: 2
Page(s): 584 - 586
ISSN (Paper): 0018-9197
ISSN (Online): 1558-1713
DOI: 10.1109/JQE.1966.1074068



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.