TY - JOUR
T1 - Surface-plasmon quantum cascade microlasers with highly deformed resonators
AU - Colombelli, R.
AU - Gmachl, Claire F.
AU - Sergent, A. M.
AU - Sivco, D. L.
AU - Narimanov, Evgenii E.
AU - Podolskiy, Viktor A.
AU - Cho, A. Y.
AU - Capasso, F.
N1 - Funding Information:
Manuscript received December 21, 2004; revised November 16, 2005. This paper is based upon work supported in part by DARPA/ARO under Contract DAAD19-00-C-0096. The work of F. Capasso was supported in part by the Air Force Office of Scientific Research under Contract MURI FA 9550-04-1-0434. The work of R. Colombelli was supported by the European Science Foundation through the EURYI “Young Investigator Award” program. R. Colombelli is with the Institut d’Electronique Fondamentale-Bât.220, Uni-versité Paris-Sud, 91405 Orsay, France (e-mail: [email protected]). C. Gmachl and E. E. Narimanov are with the Department of Electrical Engineering and PRISM, Princeton University, Princeton, NJ 08544 USA. A. M. Sergent, D. L. Sivco, and A. Y. Cho are with Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974 USA. V. A. Podolskiy is with the Physics Department, Oregon State University, Corvallis, OR 97331 USA. F. Capasso is with the Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 USA. Digital Object Identifier 10.1109/JSTQE.2005.863000
PY - 2006/1
Y1 - 2006/1
N2 - We report the demonstration of surface-plasmon microcylinder quantum cascade lasers with circular and deformed resonators. An improved self-alignment fabrication technique was developed that allows the use of wet etching, necessary to achieve smooth and clean surfaces, in combination with the deposition of the surface-plasmon-carrying metal layer up to the very edge of the resonator, where the optical mode is mostly located. The diameter of the microcylinders ranges from 75 to 180 μm while their deformation coefficient e ranges from ε = 0 to ε = 0.32. Circular microcylinder lasers show a reduction of ∼50% of the threshold current density with respect to devices with standard ridge-waveguide resonators. On the other hand, highly deformed microcylinder lasers exhibit a complex mode structure, suggesting the onset of chaotic behavior.
AB - We report the demonstration of surface-plasmon microcylinder quantum cascade lasers with circular and deformed resonators. An improved self-alignment fabrication technique was developed that allows the use of wet etching, necessary to achieve smooth and clean surfaces, in combination with the deposition of the surface-plasmon-carrying metal layer up to the very edge of the resonator, where the optical mode is mostly located. The diameter of the microcylinders ranges from 75 to 180 μm while their deformation coefficient e ranges from ε = 0 to ε = 0.32. Circular microcylinder lasers show a reduction of ∼50% of the threshold current density with respect to devices with standard ridge-waveguide resonators. On the other hand, highly deformed microcylinder lasers exhibit a complex mode structure, suggesting the onset of chaotic behavior.
KW - Microdisk lasers
KW - Microlasers
KW - Midinfrared
KW - Unipolar devices
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U2 - 10.1109/JSTQE.2005.863000
DO - 10.1109/JSTQE.2005.863000
M3 - Article
AN - SCOPUS:32944479989
SN - 1077-260X
VL - 12
SP - 66
EP - 70
JO - IEEE Journal on Selected Topics in Quantum Electronics
JF - IEEE Journal on Selected Topics in Quantum Electronics
IS - 1
ER -