Journal ArticleDOI
Progress in Quantum Electronics Vol 3
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TLDR
Sandars and Sleenholm as discussed by the authors described the behavior of three level gas systems in the presence of an intense field resonant with one of the transition points of a phase transition.Abstract:
J H Sandars and S Sleenholm (eds) Oxford: Pergamon Press 1974 Part 1 Three Level Gas Systems and Their Interaction with Radiation pp 106 price £2.95 Part 2 Mode Locking of Lasers pp 107–229 price £2.80 Both parts of this volume are valuable. The first is an extensive account of the behaviour of three level systems in the presence of an intense field resonant with one of the transitions.read more
Citations
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Journal ArticleDOI
Laser cooling and trapping of neutral atoms
Charles S. Adams,Erling Riis +1 more
TL;DR: In this paper, the basic mechanisms used in laser cooling and trapping, and illustrates the development of the field by describing a selection of key experiments, are discussed, and a review of the key experiments is presented.
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Ultrafast Coulomb-Induced Intervalley Coupling in Atomically Thin WS2
Robert Schmidt,Gunnar Berghäuser,Robert Schneider,Malte Selig,Philipp Tonndorf,Ermin Malic,Andreas Knorr,Steffen Michaelis de Vasconcellos,Rudolf Bratschitsch +8 more
TL;DR: It is shown that Coulomb-induced intervalley coupling explains the immediate and prominent pump-probe signal in the unpumped valley and the seemingly low valley polarization degrees typically observed in pump-Probe measurements compared to photoluminescence studies.
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Dynamics of stimulated emission from random media
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Study of Automatic Detection of Concealed Targets in Passive Terahertz Images for Intelligent Security Screening
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Ion-dependent electroluminescence from trivalent rare-earth doped n-ZnO/p-Si heterostructured light-emitting diodes
TL;DR: In this paper, rare earths (REs) doped ZnO-based heterojunction light-emitting diodes (LEDs) were demonstrated on p-Si substrates by ultrasonic spray pyrolisis (USP).
References
More filters
Journal ArticleDOI
Laser cooling and trapping of neutral atoms
Charles S. Adams,Erling Riis +1 more
TL;DR: In this paper, the basic mechanisms used in laser cooling and trapping, and illustrates the development of the field by describing a selection of key experiments, are discussed, and a review of the key experiments is presented.
Journal ArticleDOI
Ultrafast Coulomb-Induced Intervalley Coupling in Atomically Thin WS2
Robert Schmidt,Gunnar Berghäuser,Robert Schneider,Malte Selig,Philipp Tonndorf,Ermin Malic,Andreas Knorr,Steffen Michaelis de Vasconcellos,Rudolf Bratschitsch +8 more
TL;DR: It is shown that Coulomb-induced intervalley coupling explains the immediate and prominent pump-probe signal in the unpumped valley and the seemingly low valley polarization degrees typically observed in pump-Probe measurements compared to photoluminescence studies.
Journal ArticleDOI
Dynamics of stimulated emission from random media
TL;DR: In this article, a Monte Carlo simulation of the random walk of pump and emitted photons is used to find a sharp transition to ultrafast, narrow-linewidth emission for a 10-ps incident pump pulse and a rapid approach to steady state for longer pulses.
Journal ArticleDOI
Study of Automatic Detection of Concealed Targets in Passive Terahertz Images for Intelligent Security Screening
TL;DR: A comprehensive method for automatic detection of concealed targets in passive THz image by making the best use of the “block statistics uniformity” properties of the passive images is first studied and may have important applications in unmanned and intelligent security screening systems without any artificial interventions.
Journal ArticleDOI
Ion-dependent electroluminescence from trivalent rare-earth doped n-ZnO/p-Si heterostructured light-emitting diodes
TL;DR: In this paper, rare earths (REs) doped ZnO-based heterojunction light-emitting diodes (LEDs) were demonstrated on p-Si substrates by ultrasonic spray pyrolisis (USP).