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RAS PhysicsПисьма в Журнал экспериментальной и теоретической физики JETP Letters (Journal of Experimental and Theoretical Physics Letters)

  • ISSN (Print) 0370-274X
  • ISSN (Online) 3034-5766

Fundamentals of direct multi-wavelength diode pumping of Ti:Sapphire lasers for enhanced optical-to-optical conversion efficiency across a broad spectral range

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PII
S30345766S0370274X25060048-1
DOI
10.7868/S3034576625060048
Publication type
Article
Status
Published
Authors
K.E. Reznikov
  • Affiliation:
    Avesta Ltd.
    Lebedev Physical Institute of the Russian Academy of Sciences, Troitsk Branch
A.O. Mavritskiy
  • Affiliation: Avesta Ltd.
M.N. Esaulkov
  • Affiliation: Avesta Ltd.
A.V. Naumov
  • Affiliation:
    Avesta Ltd.
    Lebedev Physical Institute of the Russian Academy of Sciences, Troitsk Branch
A.V. Konyashchenko
  • Affiliation: Avesta Ltd.
Volume/ Edition
Volume 121 / Issue number 11-12
Pages
881-883
Abstract
Direct-diode-pumped titanium–sapphire lasers are gaining popularity as sources of coherent light due to their wide emission bandwidth, cost-effectiveness, ergonomics and compactness. Despite recent advances in this field, reported laser output powers remain relatively low. Here, we present a theoretically and experimentally described pumping technique that involves the spectral and collinear combination of blue and green laser diode radiation. We show that this approach yields an impressive average optical-to-optical efficiency of 16.6 % in continuous-wave laser mode and up to 43.6 % in femtosecond mode based on Kerr-lens mode-locking. Consequently, with a maximum pump power of 15 W, the generated output power at 770 nm reaches 2.5 W in continuous-wave mode. With a pump of 14.5 W we have 1.84 W in femtosecond mode. In the future, such titanium–sapphire lasers promise to become even more accessible and user-friendly.
Keywords
Date of publication
28.04.2025
Year of publication
2025
Number of purchasers
0
Views
40

References

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