Random lasing in vertical ZnO nanorods

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Semiconductors

DOI:https://doi.org/10.1134/S1063782607060188· OSTI ID:21088043

Red'kin, A N; Makovei, Z I; Yakimov, E E ^[1]; Barthou, C ^[2]

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1. Russian Academy of Sciences, Institute of Microelectronics Technology and High Purity Materials (Russian Federation)
2. Institut des NanoSciences (France)

Random lasing with coherent feedback is detected in the array of vertical ZnO nanorods synthesized on a Si(100) substrate. Under high-intensity optical pumping at the wavelength of 337.1 nm at room temperature, several narrow laser peaks with the width of 0.1 nm are observed in the wavelength region around 392 nm. The laser radiation is emitted in a direction orthogonal to the axis of the nanorods. Study of the behavior of the laser spectrum with the excited area shows good agreement of the data with the theory of random lasers. The mechanism of laser emission is related to the formation of closed paths of light due to multiple coherent scattering at the vertically oriented ZnO nanorods.

• OSTI ID: 21088043
• Journal Information: Semiconductors, Vol. 41, Issue 6; Other Information: DOI: 10.1134/S1063782607060188; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COHERENT SCATTERING
LASER RADIATION
LASERS
NANOSTRUCTURES
OPTICAL PUMPING
SPECTRA
TEMPERATURE RANGE 0273-0400 K
ZINC OXIDES