Mid-wavelength Infrared Photoluminescence and Lasing of Tellurium Element Solid and Microcrystals

Extra Form
author Kwang Seob Jeong
journal J. Phys. Chem. Lett.2019, 10, XXX, 4303-4309
Homepage https://kwangsjeong.wixsite.com/ksjlab-koreauniv
?

단축키

Prev이전 문서

Next다음 문서

ESC닫기

크게 작게 위로 아래로 댓글로 가기 인쇄

fe96825f97909b019d1818475c15fa44.jpg

Dongsun Choi(제1저자, 통합과정)


Tellurium has been of great interest in physics, chemistry, material science, and more recently in nanoscience. However, information on the photoluminescence of Te crystals, crucial in understanding the material, has never been disclosed. Here, we present photoluminescence and lasing for the Te bulk crystal and microcrystals. Photoluminescence of Te bulk solid crystal was observed at 3.75 μm in the midwavelength infrared (MWIR) region, matching the theoretically predicted value well. With increasing the photoexcitation intensity or decreasing temperature, we successfully observed MWIR random lasing of the bulk Te crystals at 3.62 μm. Furthermore, the rod-shaped Te microcrystals efficiently exhibit second harmonic and third harmonic lasing at MWIR and short-wavelength infrared regions, respectively. Nonlinear coherent MWIR lasing from the Te microcrystals will serve as an excellent mid-IR light source, opening up new applications in infrared photonics, extremely long-depth penetration bioimaging, and optoelectronics.


TOC.png


https://pubs.acs.org/doi/10.1021/acs.jpclett.9b01523


Articles

1 2 3 4 5 6 7 8 9 10