Frequency modulated external cavity laser with photonic crystal resonator and microheater

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Frequency modulated external cavity laser with photonic crystal resonator and microheater

Butler, Sharon M.; Bakoz, Andrei P.; Liles, Alexandros A.; Viktorov, Evgeny A.; O'Faolain, Liam; Hegarty, Stephen P.
Date: 2018-05
Copyright: © 2018, Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Related: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/browse/SPIE-Photonics-Europe/2018
Citation: Butler, S. M., Bakoz, A. P., Liles, A. A., Viktorov, E. A., O'Faolain, L. and Hegarty, S. P. (2018) 'Frequency modulated external cavity laser with photonic crystal resonator and microheater', Proceedings of SPIE 10682: Semiconductor Lasers and Laser Dynamics VIII, 106822D (5pp), SPIE Photonics Europe, Strasbourg, France, 22-26 April. doi:10.1117/12.2319142
Published Version: 10.1117/12.2319142

Abstract:

We demonstrate frequency modulation (FM) in an external cavity III-V/Silicon laser, comprising a Reflective Semiconductor Optical Amplifier (RSOA) and an SU8 polymer waveguide vertically coupled to a 2D Silicon Photonic Crystal (PhC) cavity. Laser FM was achieved by local heating of the PhC using a resistive element of Ni-Cr metal as a microheater to change the refractive index in the cavity hence changing the lasing frequency. Presented is a thermal study of the laser dynamics and observations of the shift in lasing frequency.

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