Judd--Ofelt analysis of spectra and experimental evaluation of laser performance of Tm3+ doped Lu2SiO5 crystal |
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Authors: | Yao Bao-Quan Zheng Liang-Liang Duan Xiao-Ming Zhao Guang-Jun and Zong Yan-Hua |
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Institution: | National Key Laboratory of Tunable Laser
Technology,
Harbin Institute of Technology, Harbin 150001, China; R &D Center for Laser and Opto-Electronic Materials,
Shanghai Institute of Optics and Fine Mechanics,
Chinese Academy
of
Sciences, Shanghai 201800, China |
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Abstract: | This paper reports that the Tm$^{3 + }$:LuTm:Lu2SiO5, Judd--Ofelt
analysis, solid-state lasers, diode-pumpedProject supported by the Program of
Excellent Team in Harbin Institute of Technology, China (Grant No 60878011).2320C, 4255R, 6170, 4260D1/6/2008 12:00:00 AMThis paper reports that the Tm$^{3 + }$:LuTm:Lu2SiO5, Judd--Ofelt
analysis, solid-state lasers, diode-pumpedProject supported by the Program of
Excellent Team in Harbin Institute of Technology, China (Grant No 60878011).2320C, 4255R, 6170, 4260D1/6/2008 12:00:00 AMThis paper reports that the Tm$^{3 + }$:LuTm:Lu2SiO5, Judd--Ofelt
analysis, solid-state lasers, diode-pumpedProject supported by the Program of
Excellent Team in Harbin Institute of Technology, China (Grant No 60878011).2320C, 4255R, 6170, 4260D1/6/2008 12:00:00 AMThis paper reports that the Tm$^{3 + }$:Lu$_{2}$SiO$_{5}$ (Tm:LSO)
crystal is grown by Czochralski technique. The room-temperature
absorption spectra of Tm:LSO crystal are measured on a b-cut sample
with 4 at.{\%} thulium. According to the obtained Judd--Ofelt
intensity parameters $\Om _{2}$=9.3155$\times $10$^{ - 20
}$\,cm$^{2}$, $\Om_{4}$=8.4103$\times $10$^{ - 20 }$\,cm$^{2}$,
$\Om_{6}$=1.5908$\times $10$^{ - 20 }$\,cm$^{2}$, the fluorescence
lifetime is calculated to be 2.03\,ms for $^{3}$F$_{4} \to
{}^{3}$H$_{6}$ transition, and the integrated emission cross section
is 5.81$\times $10$^{ - 18 }$\,cm$^{2}$. Room-temperature laser
action near 2\,$\mu $m under diode pumping is experimentally
evaluated in Tm:LSO. An optical-optical conversion efficiency of
9.1{\%} and a slope efficiency of 16.2{\%} are obtained with
continuous-wave maximum output power of 0.67\,W. The emission
wavelengths of Tm:LSO laser are centred around 2.06\,$\mu $m with
spectral bandwidth of $\sim $13.6\,nm. |
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Keywords: | Tm:Lu2SiO5 Judd--Ofelt
analysis solid-state lasers diode-pumped |
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