On-chip integrated lasers in Al2O3:Er on silicon

M. Pollnau; J. D. B. Bradley; F. Ay; E. H. Bernhardi; R. M. de Ridder; K. Wörhoff

doi:10.1117/12.845842

15 February 2010 On-chip integrated lasers in Al₂O₃:Er on silicon

M. Pollnau, J. D. B. Bradley, F. Ay, E. H. Bernhardi, R. M. de Ridder, K. Wörhoff

Proceedings Volume 7605, Optoelectronic Integrated Circuits XII; 76050M (2010) https://doi.org/10.1117/12.845842
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Erbium-doped aluminum oxide channel waveguides were fabricated on silicon substrates and their characteristics were investigated for Er concentrations ranging from 0.27 to 4.2 × 10²⁰ cm^-3. Background losses below 0.3 dB/cm at 1320 nm were measured. For optimum Er concentrations in the range of 1 to 2 × 10²⁰ cm^-3, internal net gain was obtained over a wavelength range of 80 nm (1500-1580 nm) and a peak gain of 2.0 dB/cm was measured at 1533 nm. Integrated Al₂O₃:Er³⁺ channel waveguide ring lasers were realized based on such waveguides. Output powers of up to 9.5 μW and slope efficiencies of up to 0.11 % were measured. Lasing was observed for a threshold diode-pump power as low as 6.4 mW. Wavelength selection in the range 1530 to 1557 nm was demonstrated by varying the length of the output coupler from the ring.

Citation Download Citation

M. Pollnau, J. D. B. Bradley, F. Ay, E. H. Bernhardi, R. M. de Ridder, and K. Wörhoff "On-chip integrated lasers in Al₂O₃:Er on silicon", Proc. SPIE 7605, Optoelectronic Integrated Circuits XII, 76050M (15 February 2010); https://doi.org/10.1117/12.845842

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