[10a-B12-1~12] 12.3 Functional Materials and Novel Devices

12:15 PM - 12:30 PM JST(3:15 AM - 3:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[10a-B12-12] Vibronic Modulation for New Function Design of Organic Laser Dyes

〇Shota Fukuma^1,2, Jean Velten³, Chihaya Adachi^1,2,4 (1.OPERA, Kyushu Univ., 2.Eng. Kyushu Univ., 3.Johannes Gutenberg Univ., 4.I2CNER, Kyushu Univ)

Keywords:

organic semiconductor laser,amplified spontaneous emission,vibronic transition

This study aimed to develop new functionalities and control strategies for organic semiconductor lasers by investigating selective control of vibronic transitions. Our newly developed emitters, incorporated into highly designable dilute-doped thin films, exhibited low-threshold, highly durable dual-wavelength light amplification. We found that competition between vibronic transitions was strongly affected by the film composition. Furthermore, through systematic analysis over a wide range of excitation densities, we revealed excitation-dependent changes in transition competition and discussed the optical amplification mechanisms governing the whole phenomena.