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Efficient infrared‐to‐visible conversion in BaY2F8: Yb,Er crystal by confinement of excitation energy

 

作者: Yoh Mita,   Eiji Nagasawa,   Ken‐ichi Shiroki,   Yasuo Ohno,   Tetsujin Matsubara,  

 

期刊: Applied Physics Letters  （AIP Available online 1973）
卷期: Volume 23, issue 4  

页码: 173-175

 

ISSN:0003-6951

 

年代: 1973

 

DOI:10.1063/1.1654848

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Efficient up‐conversion of near‐infrared energy was realized by confinement of infrared energy in an optical cavity containing a BaY2F8: Yb,Er single crystal. The lifetime of the ytterbium excited state showed a marked increase and, in a typical instance, became as long as 3.6 msec. Combined with 8% efficiency GaAs : Si diode, an over‐all conversion efficiency of nearly 0.04% was obtained for a 50‐mA diode‐exciting current.

 

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