Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Ines Waldmueller"'
Publikováno v:
IEEE Journal of Quantum Electronics. 46:1414-1420
Bandstructure engineering has enabled a broad array of semiconductor heterostructure devices, such as quantum cascade lasers, whose performance is governed by a broad parameter space involving intertwined physical properties. Using present methods it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e085968e4bbe292655f372f408c1f2af
https://doi.org/10.1109/jqe.2010.2049253
https://doi.org/10.1109/jqe.2010.2049253
Optical nonlinearities and quantum coherences have the potential to enable efficient, high-temperature generation of coherent THz radiation. This LDRD proposal involves the exploration of the underlying physics using intersubband transitions in a qua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::700d64e005a85193e980d74b83592fe9
https://doi.org/10.2172/993319
https://doi.org/10.2172/993319
Inverse-Quantum-Engineering: a new methodology for designing THz QCLs for basic and applied research
Publikováno v:
Scopus-Elsevier
We demonstrate the general capabilities of the developed methodology by tuning the emission frequency of a GaAs/Al x Ga 1-x As THz QCL over a frequency range of 2.9 THz, and the Al fraction over a range of 0.17.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cbfddc4cb6c7a2f2361a8a380a3a051
https://doi.org/10.1364/cleo.2009.cmi2
https://doi.org/10.1364/cleo.2009.cmi2
Remote optical detection of molecules, agents, and energetic materials has many applications to national security interests. Currently there is significant interest in determining under what circumstances THz frequency coverage will aid in a complete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0803e3deb69b77e8c984464de6e53e4a
https://doi.org/10.2172/921751
https://doi.org/10.2172/921751
Publikováno v:
Physical Review Letters. 99
Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we investigate the feasibility of an optically pumped electrically driven terahertz (THz) quantum-cascade laser as a pathway to room-temperature THz generation. In optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c89afb35149a9bfe2afe36f94ae0d121
https://doi.org/10.1103/physrevlett.99.117401
https://doi.org/10.1103/physrevlett.99.117401
Influence of radiative coupling on coherent Rabi intersubband oscillations in multiple quantum wells
Publikováno v:
Physical Review B. 73
The dependence of multiple quantum well intersubband Rabi oscillations on the radiative coupling between different quantum wells is investigated. We show that in a highly doped multiple quantum well sample, radiative coupling has a large impact on co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::befabaa346f82b4c3cae9ba45d82962d
https://doi.org/10.1103/physrevb.73.035433
https://doi.org/10.1103/physrevb.73.035433
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
We investigated many-body and radiative coupling effects on intersubband Rabi oscillations in a multiple quantum well system. Under certain conditions, radiative coupling is the dominating effect, yielding distinctively different excitation behaviors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d878f05c64cee584a6b771e68e19f4c
https://doi.org/10.1109/cleo.2006.4628972
https://doi.org/10.1109/cleo.2006.4628972
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
We present a many-body theory for intersubband lasers, based on the Maxwell-semiconductor Bloch equations and detailed treatment of scattering processes. Applications involving high excitation and fast modulation conditions are presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb5bf0c17dd1901bc15d87271497fde0
https://doi.org/10.1109/cleo.2006.4628193
https://doi.org/10.1109/cleo.2006.4628193