Lasing with the shortest wavelength in substituted ZnO and lasing of ZnO microcrystal or scattering gain medium in closed microcavity

Cai-Rong Ding; Bing-Chu Chen; Shu-Wei Li; He-Zhou Wang

doi:10.1117/12.767911

20 November 2007 Lasing with the shortest wavelength in substituted ZnO and lasing of ZnO microcrystal or scattering gain medium in closed microcavity

Cai-Rong Ding, Bing-Chu Chen, Shu-Wei Li, He-Zhou Wang

Author Affiliations +

Proceedings Volume 6828, Light-Emitting Diode Materials and Devices II; 682813 (2007) https://doi.org/10.1117/12.767911
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

At pulse laser pumping, stimulated emissions are observed in ZnxMg1-xO epilayers. Among them, spectral blue shifts are dependent on the Mg substitution concentration; and the highest lasing photon energy (in ZnO series materials even reported) of 3.51 eV is observed. Furthermore, experimental results also show that by high concentration Mg substitution, a red shift of the electron-hole plasma stimulated emission is reduced and its efficiency doesn't decrease with the Mg substitution concentration. These results imply that the lasing frequency of ZnO series materials can be modified by substitution. Secondly, lasing with low threshold in a closed micro-cavity filling with high scattering and irregular structure gain medium is observed. Furthermore, the usual laser physics and random laser can't explain the sharp bandwidth of lasing in sub-micron ZnO micro-crystals; a new concept of lasing needs to be proposed, which is important to the develop in physics of carrier and lasing.

Citation Download Citation

Cai-Rong Ding, Bing-Chu Chen, Shu-Wei Li, and He-Zhou Wang "Lasing with the shortest wavelength in substituted ZnO and lasing of ZnO microcrystal or scattering gain medium in closed microcavity", Proc. SPIE 6828, Light-Emitting Diode Materials and Devices II, 682813 (20 November 2007); https://doi.org/10.1117/12.767911

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