论文信息 - Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films

Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films

Room-temperature ultraviolet (UV) laser emission of ZnO microcrystallite thin films is reported. The hexagonal ZnO microcrystallites are grown by laser molecular beam epitaxy. They are self-assembled and parallelly arrayed on sapphire substrates. The facets of the hexagons form natural Fabry-Perot lasing cavities. The optical gain for the room-temperature UV stimulated emission is of an excitonic nature and has a peak value an order of magnitude larger than that of bulk ZnO crystal. The observation of room-temperature UV lasing from the ordered, nano-sized ZnO crystals represents an important step towards the development of nanometer photoelectronics. © 1998 American Institute of Physics.

[1] S. Leelaprute,et al. Correlation between the orthorhombicity and the transition temperatures of the “123” rare earth series superconductors , 1997 .

[2] Shuji Nakamura,et al. Ridge‐geometry InGaN multi‐quantum‐well‐structure laser diodes , 1996 .

[3] H. Koinuma,et al. Controlled formation of oxide materials by laser molecular beam epitaxy , 1994 .

[4] C. Klingshirn. Properties of the electron-hole plasma in II–VI semiconductors , 1992 .

[5] W. Bonner,et al. Room‐temperature blue lasing action in (Zn,Cd)Se/ZnSe optically pumped multiple quantum well structures on lattice‐matched (Ga,In)As substrates , 1990 .

[6] Stephan W Koch,et al. Stimulated Intrinsic Recombination Processes in II–VI Compounds† , 1978 .

[7] J. Hvam,et al. Direct recording of optical‐gain spectra from ZnO , 1978 .

[8] H. Haug,et al. On the Theory of Laser Action in Dense Exeiton Systems , 1977 .

[9] R. Helbig,et al. Characterization of ZnO epitaxial films by their optical properties in the exciton region , 1975 .

[10] C. Klingshirn. Über die spontane und stimulierte emission von ZnO nach Zweiquantenanregung , 1973 .

[11] J. Hvam. Temperature-Induced Wavelength Shift of Electron-Beam-Pumped Lasers from CdSe, CdS, and ZnO , 1971 .

[12] W. Bond. Measurement of the Refractive Indices of Several Crystals , 1965 .