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Proceedings Paper

Characteristics of passively mode-locked quantum dot lasers from 20 to 120 C
Author(s): J. K. Mee; M. T. Crowley; R. Raghunathan; D. Murrell; L. F. Lester
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Paper Abstract

In this paper, performance of monolithic quantum dot passively mode-locked lasers over broad temperature excursions is characterized. It is shown that there is a linear dependence between absorber to gain length ratio and the characteristic temperature that a device transitions from ground-state to excited-state lasing when the saturable absorber is grounded. The pulse shape and optical spectrum characteristics are examined in detail around these transition regimes. Experimental operational maps have also been constructed showing the range of biasing conditions that produce stable mode-locking across a wide range of temperatures. A comparison is made between regions of mode-locking stability for two devices having the same absorber to gain length ratio, with varying ridge waveguide widths. Finally, gain and absorption characteristics are derived from measurements of amplified spontaneous emission, and a correlation between reduced values of unsaturated absorption and reduced time-bandwidth product is shown. Key features in the experimental operational maps and their respective significance on the operation and design of future devices is discussed.

Paper Details

Date Published: 14 March 2013
PDF: 10 pages
Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 86190B (14 March 2013); doi: 10.1117/12.2004567
Show Author Affiliations
J. K. Mee, The Univ. of New Mexico (United States)
Air Force Research Lab. (United States)
M. T. Crowley, The Univ. of New Mexico (United States)
R. Raghunathan, The Univ. of New Mexico (United States)
D. Murrell, The Univ. of New Mexico (United States)
L. F. Lester, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 8619:
Physics and Simulation of Optoelectronic Devices XXI
Bernd Witzigmann; Marek Osinski; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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