9 February 2005 The phenomena and nature of characterized nano-radiation
Author Affiliations +
Proceedings Volume 5635, Nanophotonics, Nanostructure, and Nanometrology; (2005); doi: 10.1117/12.574836
Event: Photonics Asia, 2004, Beijing, China
Laser-induced white light emission from nano-carbon as well as other nanostructured materials in vacuum is presented in this article. It is observed only when the excitation laser intensity is higher than a threshold value (103-106 W/cm2). For the semiconductor nano-materials such as a cadmium sulphide (CdS) nano-crystal, a deep UV emission is also captured besides the white light emission. Spectra show that the nano-CdS radiate the stronger deep UV light with peak wavelengths about 210 and 215 nm. According this, a strong deep UV emission with a concomitant second harmonic generation at room temperature is also observed in a normal InGaAs laser diode (LD) operating at 980 nm. The output power of the UV radiation is estimated approaching to 0.1 mW. Since the wavelengths of the UV emission from nano-CdS are a little shorter than those of the InGaAs LD. These make it possible to develop deep UV wavelength LDs by doping different semiconductor nano-materials into the active layers besides using the III-nitride compound and ZnO semiconductor materials.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shaomin Wang, Laigui Hu, Daomu Zhao, Yonghang Shen, Jian Sha, "The phenomena and nature of characterized nano-radiation", Proc. SPIE 5635, Nanophotonics, Nanostructure, and Nanometrology, (9 February 2005); doi: 10.1117/12.574836; https://doi.org/10.1117/12.574836

Deep ultraviolet

Ultraviolet radiation

Indium gallium arsenide


Semiconductor lasers


Optical filters


Bulk damage and absorption in fused silica due to high...
Proceedings of SPIE (November 23 2015)
1.2μm emitting VECSEL based on type-II aligned QWs
Proceedings of SPIE (March 10 2016)
A Ph sensor made using cellulosic coating on a biconically...
Proceedings of SPIE (November 09 2000)
Optically Pumped Semiconductor Platelet Lasers
Proceedings of SPIE (April 23 1982)
Resist Materials For High Resolution Photolithography
Proceedings of SPIE (July 28 1981)

Back to Top