標題: Erbium doped GaSe crystal for mid-IR applications
作者: Hsu, YK
Chen, CW
Huang, JY
Pan, CL
光電工程學系
Department of Photonics
公開日期: 12-六月-2006
摘要: We reported a type-I difference-frequency generator (DFG), based on erbium doped GaSe (Er: GaSe) crystals as a coherent infrared source tunable from 2.4 mu m to 28 mu m. The two mixing beams used for the DFG are a tunable near infrared output (1.1-1.8 mu m) from an optical parametric amplifier (OPA) and the fundamental beam of a picosecond Nd: YAG laser at 1.064 mu m. The system can produce a maximum output pulse energy of 5 mu J at wavelength of 3.5 mu m, corresponding to a photon conversion efficiency of 8% at a pump intensity of 1.7 GW/cm(2). The nonlinear coefficient (d(eff)) of 0.5 atom % erbium doped GaSe crystal was found to be 55.3 pm/V or 24 % higher than that of a pure GaSe crystal. The improvement of deff is attributed to the substitutive and interstitial doping of Er ion in GaSe unit cell. The optical properties of GaSe influenced by the erbium doping are also presented. (c) 2006 Optical Society of America.
URI: http://dx.doi.org/10.1364/OE.14.005484
http://hdl.handle.net/11536/12155
ISSN: 1094-4087
DOI: 10.1364/OE.14.005484
期刊: OPTICS EXPRESS
Volume: 14
Issue: 12
起始頁: 5484
結束頁: 5491
顯示於類別:期刊論文


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