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Transverse-pumping approach for a powerful single-mode Ti:sapphire laser for near infrared lidar applications

Vogelmann, Hannes ORCID iD icon 1; Speidel, Johannes ORCID iD icon 1; Perfahl, Matthias 1; Trickl, Thomas 1
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

We present a new design of a transversely-pumped and powerful Ti:Sapphire laser, suitable for laser remote sensing in the near infrared (NIR) spectrum. Examining multiple pump configurations revealed that transversal pumping of Ti:Sapphire crystals with a Nd:YAG laser (532nm) from one or two sides, yields the maximum output power. Together with an optimized bow-tie
resonator setup, we were able to extract up to 3W (30mJ, 100Hz) of narrowband NIR laser emission from a
cuboid 50mm long Ti:Sapphire crystal. Beam quality and divergence were determined as Mx2=1.1, My2=1.7, φx=0.5mrad, φy=0.8mrad. The spectral purity (seeded, Pseed170μW) was better than 99.8\%. Additionally, we show a two-wavelengths setup applicable to an atmospheric water vapor lidar. The principle performance of this theory of operation suggests a good chance of scalability towards significantly enhanced power of future Ti:Sapphire lasers.

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 10.10.2022
Sprache Englisch
Identifikator ISSN: 1559-128X, 2155-3165
KITopen-ID: 1000151125
HGF-Programm 12.11.13 (POF IV, LK 01) Long-term trends of global atmospheric composition
Erschienen in Applied Optics
Verlag Optica Publishing Group (OSA)
Band 61
Heft 29
Seiten 8553 - 8562
Projektinformation Saphir-Laser (BMWK, KF2371502NT4)
Vorab online veröffentlicht am 03.10.2022
Nachgewiesen in Web of Science
Scopus
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Relationen in KITopen

Postprint §
DOI: 10.5445/IR/1000151125
Veröffentlicht am 10.02.2025
Seitenaufrufe: 91
seit 05.10.2022
Downloads: 1
seit 15.02.2025
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