Toward continuous-wave operation of organic semiconductor lasers

Atula S.D. Sandanayaka, Toshinori Matsushima, Fatima Bencheikh, Kou Yoshida, Munetomo Inoue, Takashi Fujihara, Kenichi Goushi, Jean Charles Maurice Ribierre, Chihaya Adachi

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Abstract

The demonstration of continuous-wave lasing from organic semiconductor films is highly desirable for practical applications in the areas of spectroscopy, data communication, and sensing, but it still remains a challenging objective. We report low-threshold surface-emitting organic distributed feedback lasers operating in the quasi–continuous-wave regime at 80 MHz as well as under long-pulse photoexcitation of 30 ms. This outstanding performance was achieved using an organic semiconductor thin film with high optical gain, high photoluminescence quantum yield, and no triplet absorption losses at the lasing wavelength combined with a mixed-order distributed feedback grating to achieve a low lasing threshold. A simple encapsulation technique greatly reduced the laser-induced thermal degradation and suppressed the ablation of the gain medium otherwise taking place under intense continuous-wave photoexcitation. Overall, this study provides evidence that the development of a continuous-wave organic semiconductor laser technology is possible via the engineering of the gain medium and the device architecture.

Original languageEnglish
Article numbere1602570
JournalScience Advances
Volume3
Issue number4
DOIs
Publication statusPublished - Apr 2017

All Science Journal Classification (ASJC) codes

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    Sandanayaka, A. S. D., Matsushima, T., Bencheikh, F., Yoshida, K., Inoue, M., Fujihara, T., Goushi, K., Ribierre, J. C. M., & Adachi, C. (2017). Toward continuous-wave operation of organic semiconductor lasers. Science Advances, 3(4), [e1602570]. https://doi.org/10.1126/sciadv.1602570