Journal of Applied Spectroscopy

, 76:685

Intracavity Raman laser generating a third stokes component at 1.5 μm

  • V. I. Dashkevich
  • V. A. Orlovich
  • A. P. Shkadarevich
Article

DOI: 10.1007/s10812-009-9249-0

Cite this article as:
Dashkevich, V.I., Orlovich, V.A. & Shkadarevich, A.P. J Appl Spectrosc (2009) 76: 685. doi:10.1007/s10812-009-9249-0

The lasing properties of an intracavity Nd:KGW Raman laser which converts the multimode radiation of an Nd:KGW laser operating on the 4F3/24I11/2 transition into the third Stokes component at a wavelength of 1.5 μm are studied. The energy in the third Stokes component is found to increase essentially linearly with the electrical energy delivered to the flashlamp. Lasing at the third Stokes component begins in the central portion of the Nd:KGW crystal and then propagates to its boundaries. Reducing the geometric aperture of the multimode pump beam in the Raman crystal lowers the divergence of the Stokes emission. For a source pump energy of 6 J, the intracavity Raman laser emits 14.7 mJ pulses of duration 3–4 nsec which are safe to the eyes. The divergence of the Raman laser beam at a level of 86% of the total energy is ≈ 9 mrad.

Keywords

stimulated Raman scattering intracavity Raman laser Raman active Nd:KGW crystal multimode Nd:KGW pump laser third Stokes component eye-safe radiation 

Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • V. I. Dashkevich
    • 1
  • V. A. Orlovich
    • 1
  • A. P. Shkadarevich
    • 2
  1. 1.B. I. Stepanov Institute of PhysicsNational Academy of Sciences of BelarusMinskBelarus
  2. 2.LÉMT private enterpriseMinskBelarus