Er:ZBLALiP whispering-gallery mode lasers at 1550-nm investigation of red-shift due to pump intensity

Guy Stephen; Hue-Yin Xu; Zhiping Cai; Patrice Feron; Michel Mortier

doi:10.1117/12.469486

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6 June 2002 Er:ZBLALiP whispering-gallery mode lasers at 1550 nm investigation of red-shift due to pump intensity

Guy Stephen, Hue-Yin Xu, Zhiping Cai, Patrice Feron, Michel Mortier

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Proceedings Volume 4629, Laser Resonators and Beam Control V; (2002) https://doi.org/10.1117/12.469486
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

Abstract

Er:ZBLALiP microsphere laser has been studied under pumping by a fiber taper at 1480 nm. Whispering Gallery Mode laser spectra were analyzed for different sphere diameters and Erbium concentrations (from 0.01 % to 0.2% by mole). The gain spectrum is calculated for the transition ⁴I_13/2->⁴I_15/2 around 1550 nm. Red-shift effect on the frequencies of both fluorescence and laser spectra is experimentally observed when the pump power is increased, originating from thermal effects. Temperature inside the microsphere cavity and thermal expansion coefficient were determined by employing the intensity ratio of two green up- conversion emission centered at 526 and 550 nm respectively which quantitatively explain this red-shift.

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Guy Stephen, Hue-Yin Xu, Zhiping Cai, Patrice Feron, and Michel Mortier "Er:ZBLALiP whispering-gallery mode lasers at 1550 nm investigation of red-shift due to pump intensity", Proc. SPIE 4629, Laser Resonators and Beam Control V, (6 June 2002); https://doi.org/10.1117/12.469486

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