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
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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