Improvement of the operation parameters for a Cr:LiSAF ultrashort-pulsed laser
| Autor: | R. Quintero-Torres, H. Castillo-Matadamas |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Materials science
Active laser medium Laser diode business.industry Physics::Optics Condensed Matter Physics Laser Industrial and Manufacturing Engineering Atomic and Molecular Physics and Optics Self-pulsation law.invention Optics law Optical cavity Physics::Accelerator Physics Laser power scaling Photonics business Instrumentation Ultrashort pulse |
| Zdroj: | Laser Physics. 18:246-252 |
| ISSN: | 1555-6611 1054-660X |
| DOI: | 10.1134/s1054660x08030109 |
| Popis: | The optimization of the pumping power that is focused on a gain medium inside an optical cavity is fundamental for increasing the efficiency of the power transferred inside a crystal, in this way increasing the output power of the laser. Nevertheless, in the case of pumping with a highly astigmatic laser diode, an undesirable form of the beam is focused on the cavity and the process to improve the cross section and sizes of the beam produce a notable reduction in the effective pump power ultimately focused in the crystal. The cavity design improvements for a Cr:LiSAF laser pumped with a 200 um × 1 um laser diode emission is presented for three different configurations, Z, V, and ring. The pump power is introduced in the cavity through a simple optical array, coupling more than 83% of the laser-diode power. The design requirements for the resonant cavity are reviewed in order to improve the coupling between the fundamental mode of the cavity and the cross-section form of the pumping beam. The stability limits of the cavities and Kerr sensitivity region are presented. |
| Databáze: | OpenAIRE |
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