Abstract
Laser emission at 1077 nm (4 F 3/2→4 I 11/2) was demonstrated in Nd3+-doped low silica content calcium aluminosilicate (LSCA) glass under 810-nm pumping by a Ti:sapphire laser. The slope efficiency of the laser emission was found to be 34% with a 20-mW threshold power. The excited-state absorption (ESA) and stimulated emission were measured between 850 and 1520 nm. The results showed two ESA bands from 931 to 1070 nm (4 F 3/2→2 D 3/2,2 G 9/2,4 G 11/2,2 K 15/2) and from 1160 to 1414 nm (4 F 3/2,4 G 9/2 → 4 G 7/2,2 K 13/2). The stimulated emission for the laser transition was found to be 45-nm broad with a peak value of 1.8×10-20 cm2. Thermal and mechanical properties of the LSCA glass were compared to the ED-2 and LHG-8 glasses. While the mechanical properties of the LSCA glass are superior to those of the commercial glasses, its temperature coefficient of optical path length is the highest among the three hosts.
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42.60.Pk; 42.70.Ce; 78.66.Jg
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de Sousa , D., Nunes , L., Rohling , J. et al. Laser emission at 1077 nm in Nd3+-doped calcium aluminosilicate glass. Appl. Phys. B 77, 59–63 (2003). https://doi.org/10.1007/s00340-003-1247-y
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DOI: https://doi.org/10.1007/s00340-003-1247-y