Exciton Lasing in ZnO-ZnCr2O4 Nanowalls

Tejendra Dixit, Jitesh Agrawal, Miryala Muralidhar, Masato Murakami, Kolla Lakshmi Ganapathi, Vipul Singh, M. S.Ramachandra Rao

研究成果: Article査読


We demonstrate low power continuous wave, red and NIR exciton lasing with FWHM of 1 nm, quality factor of 680 and threshold power of 100 μW in ZnO-ZnCr2O4 nanowalls. The NIR lasing was enabled by integrating ZnO with ZnCr2O4. Moreover, wavelength selective photoluminescence (tuning from UV to NIR) and enhanced two-photon emission were also observed in ZnO-ZnCr2O4 nanowalls. The exciton-exciton scattering can be attributed to the observation of exciton lasing at low temperature (<200 K). A plausible mechanism has been elucidated in order to explain the results. This work will open new opportunities in the advancement of oxide semiconductors based exciton lasers.

ジャーナルIEEE Photonics Journal
出版ステータスPublished - 2019 12

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

フィンガープリント 「Exciton Lasing in ZnO-ZnCr<sub>2</sub>O<sub>4</sub> Nanowalls」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。