DocumentCode :
1093682
Title :
Vibronic interactions in Nd:YAG resulting in nonreciprocity of absorption and stimulated emission cross sections
Author :
Aull, Brian F. ; Jenssen, Hans P.
Author_Institution :
Massachusetts Institue of Technology, Cambridge, MA, USA
Volume :
18
Issue :
5
fYear :
1982
fDate :
5/1/1982 12:00:00 AM
Firstpage :
925
Lastpage :
930
Abstract :
In this paper we discuss the quantum efficiency of the metastable4 
state in Nd:YAG. We show that the vibronic interaction disrupts the equality between absorption and emission cross section ("reciprocity") upon which spectroscopic quantum efficiency measurements are based. Even if the electron-lattice coupling is weak, a phonon whose energy matches the energy difference between two electronic states can have a significant effect. Our spectroscopic measurements clearly show nonreciprocity and establish the importance of vibronics in Nd:YAG. The data are consistent with a high quantum efficiency.
state in Nd:YAG. We show that the vibronic interaction disrupts the equality between absorption and emission cross section ("reciprocity") upon which spectroscopic quantum efficiency measurements are based. Even if the electron-lattice coupling is weak, a phonon whose energy matches the energy difference between two electronic states can have a significant effect. Our spectroscopic measurements clearly show nonreciprocity and establish the importance of vibronics in Nd:YAG. The data are consistent with a high quantum efficiency.Keywords :
Fluorescence spectroscopy; Neodymium:YAG lasers; Optical spectroscopy; Absorption; Fluorescence; Materials science and technology; Metastasis; Neodymium; Optical materials; Quantum mechanics; Spectroscopy; Spontaneous emission; Stimulated emission;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1982.1071611
Filename :
1071611
Link To Document :
