Using proton-transfer laser dyes for organic laser diodes

Sakai, Ken-ichi; Tsuzuki, Takeo; Itoh, Yoshihiro; Ichikawa, Musubu; Taniguchi, Yoshio
February 2005
Applied Physics Letters;2/21/2005, Vol. 86 Issue 8, p081103
Academic Journal
Photopumping measurements for the dilute thin films of the representative proton-transfer laser dye, 2-(2-hydroxyphenyl)benzothiazole (HBT) revealed that it exhibited better stimulated-emission performance, especially at the high doping level of 26 wt %. This suggests that HBT has an ability to form high gain media, in addition to an inherent potential for widely tuning gain wavelength. Both are advantageous for overcoming the polaron-absorption problem that is a major obstacle to making organic laser diodes.


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