Printed Large-Area Single-Mode Photonic Crystal Bandedge Surface-Emitting Lasers on Silicon (Open Access Publisher's Version)
KTH-Royal Institute of Technology, School of Information and Communication Technology Kista Sweden
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We report here an optically pumped hybrid III-VSi photonic crystal surface emitting laser PCSEL, consisting of a heterogeneously integrated III-V InGaAsP quantum well heterostructure gain medium, printed on a patterned defect-free Si photonic crystal PC bandedge cavity. Single mode lasing was achieved for a large area laser, with a side-mode suppression ratio of 28 dB, for lasing operation temperature 200 K. Two types of lasers were demonstrated operating at different temperatures. Detailed modal analysis reveals the lasing mode matches with the estimated lasing gain threshold conditions. Our demonstration promises a hybrid laser sources on Si towards three-dimensional 3D integrated Si photonics for on-chip wavelength-division multiplex 3D WDM systems for a wide range of volume photonicelectronic applications in computing, communication, sensing, imaging, etc.
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