Optimization of broadband quantum cascade lasers for continuous wave operation

Applied Physics Letters

Volumn 83, Issue 1, 2003, Pages 24-26

  Soibel, Alex ^a   Gmachl, Claire ^a   Sivco, Deborah L ^a   Peabody, Milton L ^a   Michael Sergent, A ^a   Cho, Alfred Y ^a   Capasso, Federico ^b  

^a LUCENT TECHNOLOGIES   (United States)

^b HARVARD UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ALUMINUM COMPOUNDS; INDIUM COMPOUNDS; INFRARED RADIATION; MOLECULAR BEAM EPITAXY; QUANTUM THEORY;

QUANTUM CASCADE (QC) LASERS;

LASERS;

EID: 0042842433     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1588374     Document Type: Article

References (10)

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3. Ultrashort Laser Pulses: Generation and Applications, in Topics in Applied Physics Series Vol. 60, edited by W. Kaiser, (Springier, Berlin, 1993).
4. R. Paiella, F. Capasso, C. Gmachl, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, A. Y. Cho, and H. C. Liu, Science 290, 1739 (2000).
5. C. Sirtori, J. Faist, F. Capasso, D. L. Sivco, A. L. Hutchinson, and A. Y. Cho, Appl. Phys. Lett. 66, 3242 (1995).
6. J. Faist, F. Capasso, C. Sirtori, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, S. G. Chu, and A. Y. Cho, Appl. Phys. Lett. 68, 3680 (1996).
7. This method cannot perfectly compensate for all variations of the gain. Small variations may possibly be present due to the limited number of the designed wavelengths and digitization of the number of stages centered at each wavelength. The remaining gain variations can be compensated by finer methods, such as change in the doping at different wavelength stages, variation of waveguide losses, etc.
8. B. W. Hakki and T. L. Paoli, J. Appl. Phys. 46, 1299 (1975).
9. The increase in the operating current required to excite additional modes slightly varies from device to device.
10. G. Luo, C. Peng, H. Q. Le, S. Pei, H. Lee, W. Hwang, B. Ishaug, and J. Zheng, IEEE J. Quantum Electron. 38, 486 (2002).