US 12,015,248 B2
Continuous-wave organic thin-film distributed feedback laser and electrically driven organic semiconductor laser diode
Chihaya Adachi, Fukuoka (JP); Sangarange Don Atula Sandanayaka, Fukuoka (JP); Toshinori Matsushima, Fukuoka (JP); Kou Yoshida, Fukuoka (JP); Jean-Charles Ribierre, Fukuoka (JP); Fatima Bencheikh, Fukuoka (JP); Kenichi Goushi, Fukuoka (JP); and Takashi Fujihara, Fukuoka (JP)
Assigned to KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka (JP); and KOALA TECH INC., Fukuoka (JP)
Filed by KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka (JP); and KOALA TECH INC., Fukuoka (JP)
Filed on May 11, 2023, as Appl. No. 18/316,000.
Application 18/316,000 is a division of application No. 17/674,668, filed on Feb. 17, 2022, granted, now 11,909,177.
Application 17/674,668 is a division of application No. 16/328,894, granted, now 11,539,190, issued on Dec. 27, 2022, previously published as PCT/JP2017/033366, filed on Sep. 1, 2017.
Claims priority of application No. 2016-171542 (JP), filed on Sep. 2, 2016; application No. 2016-197484 (JP), filed on Oct. 5, 2016; application No. 2017-017936 (JP), filed on Feb. 2, 2017; application No. 2017-020797 (JP), filed on Feb. 7, 2017; and application No. 2017-136063 (JP), filed on Jul. 12, 2017.
Prior Publication US 2023/0283050 A1, Sep. 7, 2023
Int. Cl. H01S 5/36 (2006.01); H01S 3/13 (2006.01); H01S 5/042 (2006.01); H01S 5/12 (2021.01)
CPC H01S 5/36 (2013.01) [H01S 3/1305 (2013.01); H01S 5/04253 (2019.08); H01S 5/1215 (2013.01); H01S 5/1231 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for simulation modeling of an organic laser device having an organic optical gain layer, comprising at least one of (1) to (4) below:
(1) calculating charge carrier mobility and charge carrier recombination rate in the device to perform electrical simulation;
(2) solving Helmholtz equation to determine an optical propagation mode in the device to perform optical simulation;
(3) calculating a temperature distribution in the device caused by heat conduction from a laser beam spot irradiated on the organic optical gain layer to perform temperature simulation and estimate an operation stability; and
(4) calculating a rate equation comprising gain, exciton radiative decay constant kr and exciton non-radiative decay constant knr to estimate laser characteristics.