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      The operation of a novel hot electron vertical cavity surface emitting laser

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      Author
      Balkan, N.
      O'Brien-Davies, A.
      Thoms, A. B.
      Potter, R. J.
      Poolton, N.
      Adams, M. J.
      Masum, J.
      Bek, Alpan
      Serpengüzel, Ali
      Aydınlı, Atilla
      Roberts, J. S.
      Date
      1998
      Source Title
      Proceedings of SPIE Vol. 3283, Physics and Simulation of Optoelectronic Devices VI
      Print ISSN
      0277-786X
      Publisher
      SPIE
      Volume
      3283
      Pages
      162 - 170
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      Abstract
      The hot Electron Light Emission and Lasing in Semiconductor Heterostructures devices (HELLISH-1) is novel surface emitter consisting of a GaAs quantum well, within the depletion region, on the n side of Ga 1-xAlxAs p- n junction. It utilizes hot electron transport parallel to the layers and injection of hot electron hole pairs into the quantum well through a combination of mechanisms including tunnelling, thermionic emission and diffusion of 'lucky' carriers. Super Radiant HELLISH-1 is an advanced structure incorporating a lower distributed Bragg reflector (DBR). Combined with the finite reflectivity of the upper semiconductor-air interface reflectivity it defines a quasi- resonant cavity enabling emission output from the top surface with a higher spectral purity. The output power has increased by two orders of magnitude and reduced the full width at half maximum (FWHM) to 20 nm. An upper DBR added to the structure defines HELLISH-VCSEL which is currently the first operational hot electron surface emitting laser and lases at room temperature with a 1.5 nm FWHM. In this work we demonstrate and compare the operation of UB-HELLISH-1 and HELLISH-VCSEL using experimental and theoretical reflectivity spectra over an extensive temperature range.
      Keywords
      Hot electron laser
      Longitudinal transport
      Surface emitting device
      Vertical Cavity Surface Emitting Laser(VCSEL)
      Bragg cells
      Electric conductivity
      Permalink
      http://hdl.handle.net/11693/27660
      Published Version (Please cite this version)
      https://doi.org/10.1117/12.316680
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      • Department of Physics 2299
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