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Journal Articles

Performance improvements of a split-off band infra-red detector using a graded barrier

P. K. D. D. P. Pitigala, Y. F. Lao, A. G. U. Perera, L. H. Li, E. H. Linfield, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 115, 063105 (2014)
https://doi.org/10.1063/1.4865501
Published: February 2014
View article titled, Performance improvements of a split-off band infra-red detector using a graded barrier
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Journal Articles

InAs/GaAs p-type quantum dot infrared photodetector with higher efficiency

Yan-Feng Lao, Seyoum Wolde, A. G. Unil Perera, Y. H. Zhang, T. M. Wang, H. C. Liu, J. O. Kim, Ted Schuler-Sandy, Zhao-Bing Tian, S. S. Krishna
Journal: Applied Physics Letters
Appl. Phys. Lett. 103, 241115 (2013)
https://doi.org/10.1063/1.4846555
Published: December 2013
View article titled, InAs/GaAs <em>p</em>-type quantum dot infrared photodetector with higher efficiency
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Journal Articles

Terahertz quantum-well photodetectors: Design, performance, and improvements

S. Zhang, T. M. Wang, M. R. Hao, Y. Yang, Y. H. Zhang, W. Z. Shen, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 114, 194507 (2013)
https://doi.org/10.1063/1.4826625
Published: November 2013
View article titled, Terahertz quantum-well photodetectors: Design, performance, and improvements
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Journal Articles

Disorder-induced linear magnetoresistance in (221) topological insulator Bi2Se3 films

H. T. He, H. C. Liu, B. K. Li, X. Guo, Z. J. Xu, M. H. Xie, J. N. Wang
Journal: Applied Physics Letters
Appl. Phys. Lett. 103, 031606 (2013)
https://doi.org/10.1063/1.4816078
Published: July 2013
View article titled, Disorder-induced linear magnetoresistance in (221) topological insulator Bi<sub>2</sub>Se<sub>3</sub> films
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Journal Articles

Negative differential resistance induced by thermalization of two-dimensional electrons in terahertz quantum-well photodetectors

X. G. Guo, L. L. Gu, M. Dong, J. C. Cao, H. C. Liu, F. M. Guo
Journal: Journal of Applied Physics
J. Appl. Phys. 113, 203109 (2013)
https://doi.org/10.1063/1.4808343
Published: May 2013
View article titled, Negative differential resistance induced by thermalization of two-dimensional electrons in terahertz quantum-well photodetectors
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Journal Articles

An indirectly pumped terahertz quantum cascade laser with low injection coupling strength operating above 150 K

S. G. Razavipour, E. Dupont, S. Fathololoumi, C. W. I. Chan, M. Lindskog, Z. R. Wasilewski, G. Aers, S. R. Laframboise, A. Wacker, Q. Hu, D. Ban, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 113, 203107 (2013)
https://doi.org/10.1063/1.4807580
Published: May 2013
View article titled, An indirectly pumped terahertz quantum cascade laser with low injection coupling strength operating above 150 K
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Journal Articles

Single domain Bi2Se3 films grown on InP(111)A by molecular-beam epitaxy

X. Guo, Z. J. Xu, H. C. Liu, B. Zhao, X. Q. Dai, H. T. He, J. N. Wang, H. J. Liu, W. K. Ho, M. H. Xie
Journal: Applied Physics Letters
Appl. Phys. Lett. 102, 151604 (2013)
https://doi.org/10.1063/1.4802797
Published: April 2013
View article titled, Single domain Bi<sub>2</sub>Se<sub>3</sub> films grown on InP(111)A by molecular-beam epitaxy
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Includes: Supplementary data
Journal Articles

Effect of oscillator strength and intermediate resonance on the performance of resonant phonon-based terahertz quantum cascade lasers

S. Fathololoumi, E. Dupont, Z. R. Wasilewski, C. W. I. Chan, S. G. Razavipour, S. R. Laframboise, Shengxi Huang, Q. Hu, D. Ban, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 113, 113109 (2013)
https://doi.org/10.1063/1.4795614
Published: March 2013
View article titled, Effect of oscillator strength and intermediate resonance on the performance of resonant phonon-based terahertz quantum cascade lasers
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Journal Articles

Photovoltaic infrared detection with p-type graded barrier heterostructures

P. K. D. D. P. Pitigala, S. G. Matsik, A. G. U. Perera, S. P. Khanna, L. H. Li, E. H. Linfield, Z. R. Wasilewski, M. Buchanan, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 111, 084505 (2012)
https://doi.org/10.1063/1.4704695
Published: April 2012
View article titled, Photovoltaic infrared detection with p-type graded barrier heterostructures
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Journal Articles

A phonon scattering assisted injection and extraction based terahertz quantum cascade laser

E. Dupont, S. Fathololoumi, Z. R. Wasilewski, G. Aers, S. R. Laframboise, M. Lindskog, S. G. Razavipour, A. Wacker, D. Ban, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 111, 073111 (2012)
https://doi.org/10.1063/1.3702571
Published: April 2012
View article titled, A phonon scattering assisted injection and extraction based terahertz quantum cascade laser
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Journal Articles

Investigation on the limit of weak infrared photodetection

Y. Yang, H. C. Liu, M. R. Hao, W. Z. Shen
Journal: Journal of Applied Physics
J. Appl. Phys. 110, 074501 (2011)
https://doi.org/10.1063/1.3642986
Published: October 2011
View article titled, Investigation on the limit of weak infrared photodetection
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Journal Articles

Electronic band structures and electron spins of InAs/GaAs quantum dots induced by wetting-layer fluctuation

J. Q. Ning, S. J. Xu, X. Z. Ruan, Yang Ji, H. Z. Zheng, W. D. Sheng, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 110, 054320 (2011)
https://doi.org/10.1063/1.3633508
Published: September 2011
View article titled, Electronic band structures and electron spins of InAs/GaAs quantum dots induced by wetting-layer fluctuation
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Journal Articles

Space charge mediated negative differential resistance in terahertz quantum well detectors

A. Delga, L. Doyennette, A. Buffaz, V. Berger, F. R. Jasnot, L. A. de Vaulchier, N. Péré-Laperne, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 110, 013714 (2011)
https://doi.org/10.1063/1.3605480
Published: July 2011
View article titled, Space charge mediated negative differential resistance in terahertz quantum well detectors
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Journal Articles

Near field and cavity effects on coupling efficiency of one-dimensional metal grating for terahertz quantum well photodetectors

R. Zhang, X. G. Guo, J. C. Cao, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 109, 073110 (2011)
https://doi.org/10.1063/1.3573191
Published: April 2011
View article titled, Near field and cavity effects on coupling efficiency of one-dimensional metal grating for terahertz quantum well photodetectors
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Journal Articles

Five-band bias-selectable integrated quantum well detector in an n - p - n architecture

G. Ariyawansa, Y. Aytac, A. G. U. Perera, S. G. Matsik, M. Buchanan, Z. R. Wasilewski, H. C. Liu
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 231102 (2010)
https://doi.org/10.1063/1.3524236
Published: December 2010
View article titled, Five-band bias-selectable integrated quantum well detector in an n - p - n architecture
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Journal Articles

Light-hole and heavy-hole transitions for high-temperature long-wavelength infrared detection

Y. F. Lao, P. K. D. D. P. Pitigala, A. G. U. Perera, H. C. Liu, M. Buchanan, Z. R. Wasilewski, K. K. Choi, P. Wijewarnasuriya
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 091104 (2010)
https://doi.org/10.1063/1.3486169
Published: September 2010
View article titled, Light-hole and heavy-hole transitions for high-temperature long-wavelength infrared detection
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Journal Articles

Photocurrent spectra of heavily doped terahertz quantum well photodetectors

X. G. Guo, R. Zhang, H. C. Liu, A. J. SpringThorpe, J. C. Cao
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 021114 (2010)
https://doi.org/10.1063/1.3458829
Published: July 2010
View article titled, Photocurrent spectra of heavily doped terahertz quantum well photodetectors
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Journal Articles

Strong enhancement of terahertz response in GaAs/AlGaAs quantum well photodetector by magnetic field

C. H. Yu, B. Zhang, W. Lu, S. C. Shen, H. C. Liu, Y.-Y. Fang, J. N. Dai, C. Q. Chen
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 022102 (2010)
https://doi.org/10.1063/1.3462300
Published: July 2010
View article titled, Strong enhancement of terahertz response in GaAs/AlGaAs quantum well photodetector by magnetic field
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Journal Articles

Optically induced fast wavelength modulation in a quantum cascade laser

Gang Chen, Rainer Martini, Seong-wook Park, Clyde G. Bethea, I.-Chun A. Chen, P. D. Grant, R. Dudek, H. C. Liu
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 011102 (2010)
https://doi.org/10.1063/1.3457871
Published: July 2010
View article titled, Optically induced fast wavelength modulation in a quantum cascade laser
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Journal Articles

Interband-cascade infrared photodetectors with superlattice absorbers

Rui Q. Yang, Zhaobing Tian, Zhihua Cai, J. F. Klem, Matthew B. Johnson, H. C. Liu
Journal: Journal of Applied Physics
J. Appl. Phys. 107, 054514 (2010)
https://doi.org/10.1063/1.3327415
Published: March 2010
View article titled, Interband-cascade infrared photodetectors with superlattice absorbers
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