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9 May 2018 Frequency modulated external cavity laser with photonic crystal resonator and microheater
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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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Sharon M. Butler, Andrei P. Bakoz, Alexandros A. Liles, Evgeny A. Viktorov, Liam O'Faolain, and Stephen P. Hegarty "Frequency modulated external cavity laser with photonic crystal resonator and microheater", Proc. SPIE 10682, Semiconductor Lasers and Laser Dynamics VIII, 106822D (9 May 2018); https://doi.org/10.1117/12.2319142
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