Gain optimization in electrically pumped AlGaAs quantum cascade lasers
Abstract
The design of the active region of a current-pumped quantum-cascade laser to achieve maximal gain is proposed. Starting with an arbitrary smooth potential, a family of isospectral Hamiltonians with a predefined energy spectrum is generated by use of the inverse spectral theory. By varying the relevant control parameter, one varies the potential shape, inducing changes in transition dipole moments and electron-phonon scattering times, and thus finds the potential that gives the largest gain. As an example, a simple step quantum-well structure with just a few layers is then designed such that, in postgrowth heating-induced layer interdiffusion, it will acquire a shape that is as close as possible to that of the optimal smooth potential.
Source:
Journal of the Optical Society of America B-Optical Physics, 2002, 19, 10, 2357-2364Publisher:
- Optical Soc Amer, Washington
DOI: 10.1364/JOSAB.19.002357
ISSN: 0740-3224
WoS: 000178499900007
Scopus: 2-s2.0-0141563762
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Kočinac, Saša AU - Tomić, Stanko AU - Ikonić, Zoran AU - Milanović, Vitomir PY - 2002 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/419 AB - The design of the active region of a current-pumped quantum-cascade laser to achieve maximal gain is proposed. Starting with an arbitrary smooth potential, a family of isospectral Hamiltonians with a predefined energy spectrum is generated by use of the inverse spectral theory. By varying the relevant control parameter, one varies the potential shape, inducing changes in transition dipole moments and electron-phonon scattering times, and thus finds the potential that gives the largest gain. As an example, a simple step quantum-well structure with just a few layers is then designed such that, in postgrowth heating-induced layer interdiffusion, it will acquire a shape that is as close as possible to that of the optimal smooth potential. PB - Optical Soc Amer, Washington T2 - Journal of the Optical Society of America B-Optical Physics T1 - Gain optimization in electrically pumped AlGaAs quantum cascade lasers EP - 2364 IS - 10 SP - 2357 VL - 19 DO - 10.1364/JOSAB.19.002357 ER -
@article{ author = "Kočinac, Saša and Tomić, Stanko and Ikonić, Zoran and Milanović, Vitomir", year = "2002", abstract = "The design of the active region of a current-pumped quantum-cascade laser to achieve maximal gain is proposed. Starting with an arbitrary smooth potential, a family of isospectral Hamiltonians with a predefined energy spectrum is generated by use of the inverse spectral theory. By varying the relevant control parameter, one varies the potential shape, inducing changes in transition dipole moments and electron-phonon scattering times, and thus finds the potential that gives the largest gain. As an example, a simple step quantum-well structure with just a few layers is then designed such that, in postgrowth heating-induced layer interdiffusion, it will acquire a shape that is as close as possible to that of the optimal smooth potential.", publisher = "Optical Soc Amer, Washington", journal = "Journal of the Optical Society of America B-Optical Physics", title = "Gain optimization in electrically pumped AlGaAs quantum cascade lasers", pages = "2364-2357", number = "10", volume = "19", doi = "10.1364/JOSAB.19.002357" }
Kočinac, S., Tomić, S., Ikonić, Z.,& Milanović, V.. (2002). Gain optimization in electrically pumped AlGaAs quantum cascade lasers. in Journal of the Optical Society of America B-Optical Physics Optical Soc Amer, Washington., 19(10), 2357-2364. https://doi.org/10.1364/JOSAB.19.002357
Kočinac S, Tomić S, Ikonić Z, Milanović V. Gain optimization in electrically pumped AlGaAs quantum cascade lasers. in Journal of the Optical Society of America B-Optical Physics. 2002;19(10):2357-2364. doi:10.1364/JOSAB.19.002357 .
Kočinac, Saša, Tomić, Stanko, Ikonić, Zoran, Milanović, Vitomir, "Gain optimization in electrically pumped AlGaAs quantum cascade lasers" in Journal of the Optical Society of America B-Optical Physics, 19, no. 10 (2002):2357-2364, https://doi.org/10.1364/JOSAB.19.002357 . .