Continuous-Wave InP-InGaAsP Microsquare Laser—A Comparison to Microdisk Laser

Continuous-Wave InP-InGaAsP Microsquare Laser—A Comparison to Microdisk Laser
Title:
Continuous-Wave InP-InGaAsP Microsquare Laser—A Comparison to Microdisk Laser
Other Titles:
Photonics Technology Letters, IEEE
Keywords:
Publication Date:
15 December 2014
Citation:
Chee-Wei Lee; Qian Wang; Yicheng Lai; Ng, D.K.T.; Siu Kit Ng, "Continuous-Wave InP-InGaAsP Microsquare Laser—A Comparison to Microdisk Laser," in Photonics Technology Letters, IEEE , vol.26, no.24, pp.2442-2445, Dec.15, 15 2014 doi: 10.1109/LPT.2014.2358643
Abstract:
We demonstrate compact optically pumped microsquare cavity laser on InP-based multiple-quantum-wells material platform. Continuous-wave operation is achieved for microsquare cavity with footprint as small as 4 × 4 μm2. Numerical mode analysis and experimental characterization of the microsquare laser are conducted, and the results are compared with the commonly used microdisk cavity laser fabricated on the same platform. The microsquare laser shows a lower lasing threshold and infers a higher differential efficiency than the microdisk counterpart. The microsquare cavity laser has also sufficiently high quality factor, and higher pumping injection efficiency due to the more evenly distributed field profile as compared to that of the microdisk. Experimental result also shows that the microsquare laser has better temperature stability than the microdisk. These results promise a potential alternative laser structure for on-chip light source applications.
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PublisherCopyrights
Funding Info:
Description:
(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
ISSN:
1041-1135
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