Applied Physics A

, Volume 83, Issue 3, pp 347–350 | Cite as

Thermal effects vs. gain in femtosecond laser written waveguides in neodymium doped fused silica

  • G. MatthäusEmail author
  • J. Burghoff
  • M. Will
  • S. Nolte
  • A. Tünnermann
Rapid communication


The influence of thermal effects in gain measurements of fs laser-written waveguides in actively doped glass is reported for the first time. We show that these effects strongly contribute to the signal enhancement (up to 50% observed). Thus, a new measurement scheme to distinguish between thermal induced signal increase and real amplification is proposed.


Pump Power Refractive Index Change Laser Glass Gain Measurement Integrate Optical Device 
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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • G. Matthäus
    • 1
    Email author
  • J. Burghoff
    • 1
  • M. Will
    • 1
  • S. Nolte
    • 1
  • A. Tünnermann
    • 1
  1. 1.Institute of Applied PhysicsFriedrich-Schiller-University JenaJenaGermany

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