IBr Photodissociation Laser as a Simulation for a Solar Pumped System

  • A. Yogev
  • I. Levy
  • M. Shapiro
Part of the Springer Proceedings in Physics book series (SPPHY, volume 15)


Laboratory simulations of a solar pumped IBr laser were carried out, in order to clarify the following issues:
  1. (a)

    The prospects for operating the IBr laser using a solar concentrator.

  2. (b)

    The dependence of excited Br atom formation, on the spectral excitation range.

  3. (c)

    Methods for enhancing the recombination process (of I and Br atoms) by adding inert gases to the laser gain medium, in order to improve laser performance.

Lasing with different experimental set ups, under various conditions has been investigated, leading to the following conclusions:
  1. (1)

    The improvement of laser performance by using suitable dye solutions as filters, provides indirect evidence for the formation of ground state Br atoms, by UV radiation, and proves the strong Br* formation dependence on the spectral excitation range.

  2. (2)

    Addition of inert gas has been found to increase laser power and decrease threshold and onset times.

  3. (3)

    Laser pulse width can be made considerably longer by using long excitation pulses.

  4. (4)

    Threshold input energies for lasing are estimated to lie in the range of 3000 solar constants. This is similar to the results achieved by Zapata et al. (1) and various calculations which were done on this subject (2,3). This concentration factor is lower than that attained in the solar furnace and in the range of consternation achieved by central receivers.



Laser Action Flash Lamp Laser Pulse Width Central Receiver Increase Laser Power 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • A. Yogev
    • 1
  • I. Levy
    • 1
  • M. Shapiro
    • 2
  1. 1.Isotope DepartmentThe Weizman Institute of ScienceRehovotIsrael
  2. 2.Chemical Physics DepartmentThe Weizman Institute of ScienceRehovotIsrael

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