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Room Temperature Lasing in GeSn Alloys

Li, Zairui
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1450105363

Abstract Details

2015, Master of Science (M.S.), University of Dayton, Electro-Optics.
The semiconductor industry has been pushing silicon photonics development for many years, resulting in the realization of many CMOS-compatible optoelectronic devices. However, one challenge that has not been overcome is the development of Si-based lasers. Recently, GeSn alloys grown on Si have shown much promise in the field of infrared optoelectronics. These alloy films are compatible with CMOS processing, have band gaps in the infrared, and the band structure of GeSn can be tuned via Sn concentration to induce direct band gap emission. In this work, we report on room temperature lasing in optically pumped waveguides fabricated from GeSn films grown epitaxially on Si (100) substrates. The waveguides were defined using standard UV photolithography and dry-etched in a Cl plasma. The end facets were mirror polished, and Al was deposited on one facet to enhance cavity quality. The waveguides were optically pumped using a 976 nm wavelength solid-state laser, and the corresponding emission was measured. The dependence of the emission power on the pump power shows a clear transition between spontaneous and stimulated emission, thereby demonstrating room temperature lasing.
Mathews Jay (Committee Chair)
52 p.
Optics
GeSn; on-Si laser;

Recommended Citations

Citations

  • Li, Z. (2015). Room Temperature Lasing in GeSn Alloys [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1450105363

    APA Style (7th edition)

  • Li, Zairui. Room Temperature Lasing in GeSn Alloys. 2015. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1450105363.

    MLA Style (8th edition)

  • Li, Zairui. "Room Temperature Lasing in GeSn Alloys." Master's thesis, University of Dayton, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1450105363

    Chicago Manual of Style (17th edition)

dayton1450105363
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© 2015, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.