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Updated: Jul 25, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
A high gain, low loss, and low-threshold spherical organic laser based on highly miscible excited-state
Shunya Aoyagi1, Yoshiya Omori2, Tsukasa Kawamura2
1Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan. yamagishi.hiroshi.ff@u.tsukuba.ac.jp.
Abstract:
Here, we report two types of excited-state intramolecular proton transfer dyes featuring exceptionally high miscibility with a polymer matrix (>50 wt%). Using these dyes, we assemble spherical laser oscillators and observe a significant reduction in the laser emission threshold at higher dye concentrations due to the enhanced optical gain as well as suppressed self-absorption and light scattering.
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