[10a-N321-1~12] 12.3 Functional Materials and Novel Devices

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[10a-N321-4] Amplified Spontaneous Emission from Organic Single Crystals via Bulky Substituent Introduction

〇Soichiro Azuma¹, Takumi Matsuo^2,3, Shotaro Hayashi^2,3,4 (1.Grad. Eng., Kochi University. of Tech., 2.School Eng. Sci., Kochi University. of Tech., 3.Res. Inst., Kochi Univ. of Tech., 4.FOREST, JST)

Keywords:

Organic Crystals,Amplified Spontaneous Emission (ASE),Crystal structure control

Organic single crystals hold promise as nonlinear optical materials due to their inherent anisotropy. However, controlling their functionality directly from their molecular structure has remained largely unexplored due to the difficulty in predicting their aggregated states. This research focuses on the crucial importance of controlling crystal structure and functionality through molecular design. We have successfully achieved highly efficient single-crystal laser oscillation using Distylbenzene (DSB) derivatives with bulky tert-butyl (tBu) group introduction. Furthermore, we designed a novel molecule, FtBuC, by incorporating a fluorine atom. We anticipate that the synergistic effect of fluorine and the tBu group will expand the intermolecular distance within the crystal, leading to highly efficient amplified spontaneous emission (ASE). The details of this work will be presented in this talk.