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  4. Alignment and maintenance free all-fiber laser source for CARS microscopy based on frequency conversion by four-wave-mixing
 
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2012
Conference Paper
Title

Alignment and maintenance free all-fiber laser source for CARS microscopy based on frequency conversion by four-wave-mixing

Abstract
In this contribution we report on a novel approach for pump and stokes pulse generation in extremely compact all-fiber systems using parametric frequency conversion (four-wave-mixing) in photonic-crystal fibers. Representing a completely alignment-free approach, the all-fiber ytterbium-based short-pulse laser system provides intrinsically synchronized tunable two-color picosecond pulses emitted from a single fiber end. The system was designed to address important CH-stretch vibrational resonances. Strong CARS signals are generated and proved by spectroscopic experiments, tuning the laser over the resonance of toluene at 3050cm-1. Furthermore the whole laser setup with a footprint of only 30x30cm2 is mounted on a home-built laser-scanning-microscope and CARS imaging capabilities are verified. The compact turn-key system represents a significant advance for CARS microscopy to enter real-world, in particular bio-medical, applications.
Author(s)
Baumgartl, Martin
Chemnitz, Mario
Jauregui, Cesar
Meyer, Tobias  
Dietzek, Benjamin
Popp, Jürgen
Limpert, Jens  
Tünnermann, Andreas  
Mainwork
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII  
Conference
Conference "Frontiers in Ultrafast Optics - Biomedical, Scientific, and Industrial Applications" 2012  
DOI
10.1117/12.908170
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Keyword(s)
  • CARS

  • fiber laser

  • four-wave mixing

  • fiber optical parametric frequency conversion

  • nonlinear microscopy

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