Results 61 to 70 of about 2,314,699 (185)

Measurement of the cavity dispersion in quantum cascade lasers using subthreshold luminescence

Nanophotonics
The measurement of the cavity dispersion is a key ingredient in the characterization of a laser frequency comb due to its fundamental role in predicting the multimode laser dynamics.
Schneider Barbara, Faist Jérôme
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Intersubband plasmons in the quantum limit in gated and aligned carbon nanotubes

Nature Communications, 2018
Quantum confinement has enabled the development of modern optoelectronic devices, including the quantum cascade laser, based on the control of intersubband plasmons. Here, Yanagi et al.
Kazuhiro Yanagi, Ryotaro Okada, Yota Ichinose, Yohei Yomogida, Fumiya Katsutani, Weilu Gao, Junichiro Kono   +6 more
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Porous waveguide facilitated low divergence quantum cascade laser

, 2011
A quantum cascade laser with a porous waveguide structure emitting at4.5μm is reported. A branchlike porous structure filled with metal material was fabricated on both sides of the laser ridge by an electrochemical etching process.
Liu, Fengqi, Wanfeng Liu, Jinchuan Zhang, Lu, Quanyong, Lijun Wang, Yin, Wen, Zhang, Jinchuan, Fengqi Liu, Wang, Zhanguo, Wen Yin, Liu, Junqi, Lu Li, Wang, Lijun, Liu, Wanfeng, Li, Lu, Junqi Liu, Liu, F.(fqliu@semi.ac.cn), Quanyong Lu, Zhanguo Wang   +18 more
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Measurements of the linewidth enhancement factor of mid-infrared quantum cascade lasers by different optical feedback techniques

AIP Advances, 2016
Precise knowledge of the linewidth enhancement factor of a semiconductor laser under actual operating conditions is of prime importance since this parameter dictates various phenomena such as linewidth broadening or optical nonlinearities enhancement ...
L. Jumpertz, F. Michel, R. Pawlus, W. Elsässer, K. Schires, M. Carras, F. Grillot   +6 more
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Ultrashort-pulse generation from quantum-dot semiconductor diode lasers [PDF]

, 2008
In this thesis, novel regimes of mode locking in quantum dot semiconductor laser diodes have been investigated by exploiting the unique features offered by quantum dots.
Cataluna, Maria Ana
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Cascade Type-I Quantum Well GaSb-Based Diode Lasers

Photonics, 2016
Cascade pumping of type-I quantum well gain sections was utilized to increase output power and efficiency of GaSb-based diode lasers operating in a spectral region from 1.9 to 3.3 μm.
Leon Shterengas, Gela Kipshidze, Takashi Hosoda, Meng Wang, Tao Feng, Gregory Belenky   +5 more
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Investigation of spectrally broad gain multiple-width quantum well material for colliding pulse mode-locked operation [PDF]

, 2004
The first colliding pulse mode-locked operation of devices fabricated from broad gain spectrum multiple-width quantum well material is reported. Using multiple-width quantum wells in the active region of the InGaAs/InAlGaAs material system, 35% broader ...
McDougall, S.D., Jain, M., Bryce, A.C., Ironside, C.N.   +3 more
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Dynamic conductivity of symmetric three-barrier plane nanosystem in constant electric field

Condensed Matter Physics, 2011
The theory of dynamic conductivity of nanosystem is developed within the model of rectangular potentials and different effective masses of electron in open three-barrier resonance-tunnel structure in a constant homogeneous electric field. The application
O. Voitsekhivska, M. Tkach, Ju. Seti
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Short wavelength distributed feedback quantum cascade laser

, 2009
We report on a lateral grating, distributed feedback quantum cascade (QC) laser operating at 3.45 mu m with the intended application of trace gas detection.
T. J. Slight, Passaro, V.M.N., J. W. Cockburn, Revin, D.G., C. N. Ironside, Steer, M.J., G. Tandoi, De Leonardis, F., M. J. Steer, Slight, T.J., Langton, C., V. M. N. Passaro, Tandoi, G., Cockburn, J.W., D. G. Revin, Ironside, C.N., S. Y. Zhang, McKee, A., I. Eddie, T. SLIGHT, PASSARO, Vittorio, F. De Leonardis, A. McKee, C. Langton, DE LEONARDIS, Francesco, Zhang, S.Y., Eddie, I.   +26 more
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External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices

Scientific Reports, 2017
Active control of the amplitude and frequency of terahertz sources is an essential prerequisite for exploiting a myriad of terahertz applications in imaging, spectroscopy, and communications.
S. J. Kindness, D. S. Jessop, B. Wei, R. Wallis, V. S. Kamboj, L. Xiao, Y. Ren, P. Braeuninger-Weimer, A. I. Aria, S. Hofmann, H. E. Beere, D. A. Ritchie, R. Degl’Innocenti   +12 more
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