Description
Experimental results of stimulated emission in organic devices under electric pumping are still under debate [1]. We present simulations of spectral dynamics of light emission unveiling sharp peak emission of organic laser diodes well below laser threshold, indicating that narrow-peak emission is not necessarily a signature of lasing.Simulations of time-resolved output spectra of electrically pumped organic laser diodes are confronted with experimental measurements (under optical pumping). In cases of large triplet-induced gain quenching (e.g. in Alq3 or DCM), lasing occurs during the first few nanoseconds at most after the onset of electrical excitation [2,3]. In cases with less triplet quenching (e.g., BsB-Cz [1]), cw lasing is possible. This has consequences for the form of the observed LV and output spectrum characteristics.
Simulated time-resolved output-power spectra will be presented from below to above the threshold for (pulsed or cw) lasing, as well as time-averaged output spectra.
[1] S.D. Sandanayaka, et al., Appl. Phys. Express 12, 2019, 061010
[2] A. Ouirimi, et al., Organic Electronics 97, 2021, DOI: 10.1016/j.orgel.2021.106190
[3] D. Lenstra, et al., Journal of Optics 24, 2022, DOI: 10.1088/2040- 8986/ac
| Period | 1 Sept 2023 |
|---|---|
| Held at | Université Sorbonne Paris Nord, France |
| Degree of Recognition | International |
Keywords
- organic laser diode
- optical spectrum