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Femtosecond laser inscribed waveguide and micro-chip laser operation at 1.07μm in Yb3+ doped germanate glass
Author(s): Mamoona Khalid; George Y. Chen; Jiafang Bei; Heike Ebendorff-Heideprem; David G. Lancaster
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Paper Abstract

The development of the first Yb3+ doped microchip and waveguide laser in germanate glass (GPGN) is reported with a composition of 54GeO2-31PbO-4Ga2O3-9Na2CO3-1.5Yb2O3 (Yb3+: GPGN). Up to 51mW at 650mW of input power is obtained from a L=4.5mm long cavity microchip laser operating at 1052nm with slope efficiency of ~30% and laser threshold of ~230mW. Single track (type 1) waveguides are inscribed 150μm beneath the surface of the sample in the femtosecond laser cumulative heating regime. Pulse energies range from15nJ to 75nJ producing guiding structures ranging from d= 12μm to 60μm. Waveguide laser operation is achieved for a 24μm diameter waveguide with up to ~20mW output power generated at 1.07μm for 650mW of 976 nm pump power.

Paper Details

Date Published: 30 December 2019
PDF: 2 pages
Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 1120028 (30 December 2019); doi: 10.1117/12.2539820
Show Author Affiliations
Mamoona Khalid, Univ. of South Australia (Australia)
George Y. Chen, Univ. of South Australia (Australia)
Jiafang Bei, The Univ. of Adelaide (Australia)
Heike Ebendorff-Heideprem, The Univ. of Adelaide (Australia)
David G. Lancaster, Univ. of South Australia (Australia)


Published in SPIE Proceedings Vol. 11200:
AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019
Arnan Mitchell; Halina Rubinsztein-Dunlop, Editor(s)

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