Pyrromethene-BF2 laser dyes

Theodore G. Pavlopoulos; Joseph H. Boyer

doi:10.1117/12.172741

1 June 1994 Pyrromethene-BF₂ laser dyes

Theodore G. Pavlopoulos, Joseph H. Boyer

Proceedings Volume 2115, Visible and UV Lasers; (1994) https://doi.org/10.1117/12.172741
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The pyrromethene-BF₂ (P-BF₂) complexes are a new class of efficient laser dyes that exhibit laser action from the green to the red spectral region. Some of these dyes outperform commercially available dyes, showing laser action in the same spectral region. We, therefore, are presenting experimental data on laser action efficiency under flashlamp, cw laser, and synchronously pumping of some typical P-BF₂ laser dyes. The main reason for the improved performance of the new laser dyes is reduced triplet state absorption over the fluorescence spectral region of the triplet state P-BF₂ molecules. Triplet state losses in laser dyes are briefly reviewed. Some general criteria for obtaining improved laser dyes are discussed. Because of the long triplet state lifetime (tau) _T of the P-BF₂ molecules in solution, these dyes do not yet exhibit maximum laser action efficiencies under flashlamp excitation.

Citation Download Citation

Theodore G. Pavlopoulos and Joseph H. Boyer "Pyrromethene-BF₂ laser dyes", Proc. SPIE 2115, Visible and UV Lasers, (1 June 1994); https://doi.org/10.1117/12.172741

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