论文信息 - Green Er(3+):YLiF(4) upconversion laser at 551nm with Yb(3+) codoping: a novel pumping scheme.

Green Er(3+):YLiF(4) upconversion laser at 551nm with Yb(3+) codoping: a novel pumping scheme.

We report room-temperature continuous-wave upconversion laser emission on the green transition (4)S(3/2)?(4)I(15/2) in Er(1%), Yb(3%):YLiF(4) at 551nm. Green laser operation was obtained for titanium-sapphire pump wavelengths continuously tunable between 955 and 974.5nm. Codoping with Yb(3+) resulted in a more efficient excitation of the upper laser level by upconversion processes. The maximum green laser output power was 37mW at an incident titanium-sapphire pump power level of 1580mW at 966nm.

[1] L. Johnson,et al. Infrared‐Pumped Visible Laser , 1971 .

[2] L. Johnson,et al. Upconversion laser emission from Yb 3+ -sensitized Tm 3+ in BaY 2 F 8 , 1994 .

[3] F. Auzel,et al. Upconversion processes in coupled ion systems , 1990 .

[4] B. Chai,et al. Ho3+ to Yb3+ back transfer and thermal quenching of upconversion green emission in fluoride crystals , 1993 .

[5] C. Pedrini,et al. Excited-state absorption and energy transfer in Er3+ doped LiYF4 , 1986 .

[6] Hajime Yamamoto,et al. Energy transfer processes in Er3+‐ and Yb3+‐doped infrared upconversion materials , 1995 .

[7] G. Huber,et al. Infrared excited-state absorption and stimulated-emission cross sections of Er3+-doped crystals , 1995 .

[8] F. W. Ostermayer,et al. Infrared Excitation of Visible Luminescence in Y 1 − x Er x F 3 via Resonant Energy Transfer , 1970 .

[9] D. Mccumber,et al. Einstein Relations Connecting Broadband Emission and Absorption Spectra , 1964 .

[10] Lloyd L. Chase,et al. Infrared cross-section measurements for crystals doped with Er/sup 3+/, Tm/sup 3+/, and Ho/sup 3+/ , 1992 .