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We identify three regimes of correlated GeV-electron/keV-betatron-x-ray generation by a laser-plasma accelerator driven by the Texas Petawatt laser, and relate them to variations in strength of blowout, injection geometry and beam loading.
We report self-injected quasi-monoenergetic (5% spread FWHM) acceleration of electrons to 2.0 ± 0.1 GeV by 0.6 PW-laser-driven wakefield acceleration in pure He plasma of density 5×1017 cm−3. Electron bunches diverge ∼0.5mrad, and contain ∼60 pC.
Based on a hybrid-plasmon (HPP) platform, we report the first demonstrations of low-loss, deep-subwavelength waveguiding and plasmon semiconductor Nanolaser with room temperature operating, towards wavelength-scale photonic integrated circuits.
We review recent progress on metal-based lasers with optical confinement approaching 1/20th of the wavelength at room temperature and discusses the broader impact of plasmonic light sources and their application.
This paper reports an integrated injection-locked laser constructed using microelectromechanical systems (MEMS) technology, which achieves a large wide locking range of 43 nm with an average SMSR of 32 dB.
An experimental determination of the linewidth enhancement factor, alpha, of a GaInNAs/GaAs laser is presented. The modal gain and Fabry-Perot mode shift with injection current were analysed to derive a value of alpha=2.8 at threshold for the 1278 nm emission
GaAs/GaAlAs integrated twinguide DFB lasers with first-order contacted surface grating are fabricated from MBE-wafers by electron beam lithography and ion milling. A room temperature CW threshold current of 40 mA is obtained for a BCRW structure with a coupling coefficient of 60 cm/sup -1/. The lasers exhibit stable singlemode operation with a sidemode suppression of more than 25 dB.<<ETX>>
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