[12p-A409-1~14] 12.4 Organic light-emitting devices and organic transistors

[12p-A409-12] Organic semiconductor lasers: LASER and ASE

〇Katsumi Tanigaki^1,2, Taiki Miura², Hidekazu Shimotani² (1.AIMR, Tohoku Univ., 2.Grad. Sch. of Sci. Tohoku Univ.)

Keywords:Organic smeiconductor laser, Organic field-effect transistor

The intrinsic dissimilarities between lasing and ASE are whether light amplification is made by a single coherent process (ASE) or a multiple coherent process (LASER) via a feedback process inside a lasing medium, the latter of which can be proven under the existence of a resonator with two opposite reflection mirrors (Fabry-Pérot resonator: FRP) or distributed feedback (DFB) via the Bragg reflections in the periodic nano structure. LASER or ASE can be justified by the evidence of the repeated multiple feedback process in a resonator. We will discuss how the oscillated emission realized in our light-emitting device with FET structure can be differentiated between LASER and ASE based on our experiments.