Results 271 to 280 of about 12,195 (298)

Terahertz Semiconductor Laser Structures

Materials Science Forum, 2002
In this paper, we theoretically examine the possible quantum well structures that may fulfill the criterion to achieve a terahertz (THz) laser devices.
Qing Xiang Zhao, Magnus Willander
openaire   +1 more source

Terahertz quantum cascade lasers

The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003. LEOS 2003., 2004
We report our successful development of THz quantum cascade lasers with two unique features. The intersubband gain medium is based on resonant optical phonon scattering to depopulate the lower lasing level, and the THz mode confinement is achieved using a metal-semiconductor-metal waveguide.
null Qing Hu, B.S. Williams, S. Kumar, H. Callebaut, J.L. Reno   +4 more
openaire   +1 more source

Laser terahertz emission microscope

SPIE Proceedings, 2011
Recent progress of laser terahertz (THz) emission microscope (LTEM) is reviewed.Femtosecond lasers can excite the THz waves in various electronic materials due to ultrafast current modulation. The current modulation is realized by acceleration or deceleration of photo-excited carriers, and thus LTEM visualizes dynamic photo-response of substances ...
Masayoshi Tonouchi, Sunmi Kim, Iwao Kawayama, Hironaru Murakami   +3 more
openaire   +1 more source

Terahertz silicon lasers

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006
Hübers, Heinz-Wilhelm, Pavlov, S.G., Shastin, V.N.   +2 more
openaire   +2 more sources

TERAHERTZ LASER SOURCE AND METHOD FOR EMITTING TERAHERTZ RADIATION

2021
La présente description concerne une sourcelaser térahertz (THz) ainsi qu’un procédé d’émission deradiations térahertz.
openaire   +1 more source

Tuning a terahertz wire laser

2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM), 2010
Lasers that can be continuously tuned over a broad wavelength range are essential components for sensing and spectroscopy. The frequency of a conventional tunable laser is changed similarly to a musical instrument such as the violin, whose pitch is varied by changing the length (the longitudinal component of wave vector) and the tension (the refractive
openaire   +1 more source

Terahertz Lasers

2018
Benjamin S. Williams, Qing Hu
openaire   +1 more source

Towards Terawatt-Scale Spectrally Tunable Terahertz Pulses via Relativistic Laser-Foil Interactions

Physical Review X, 2020
Zhe Zhang, Yu-Tong Li, C D Armstrong
exaly  

Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields

Optics Express, 2007
Ki-Yong Kim, G Rodríguez, J H Glownia
exaly  

Terahertz emission from laser-induced microplasma in ambient air

Optica, 2015
Fabrizio Buccheri, X -C Zhang
exaly