Research output: Contribution to journal › Article › peer-review
Random lasing in ZnO self-organized nanoparticles produced by laser induced breakdown. / Vasilyev, Nikolay; Borisov, E. N.; Novikov, B. V.; Akopyan, I. Kh; Novikov, B. V.
In: Journal of Luminescence, Vol. 215, 116668, 11.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Random lasing in ZnO self-organized nanoparticles produced by laser induced breakdown
AU - Vasilyev, Nikolay
AU - Borisov, E. N.
AU - Novikov, B. V.
AU - Akopyan, I. Kh
AU - Novikov, B. V.
PY - 2019/11
Y1 - 2019/11
N2 - A simple laser-assisted method to transform metallic Zn to a ZnO-based random lasing medium is reported. The method uses Nd+3 laser-induced air breakdown to treat the surface of a Zn target in oxygen atmosphere, and thus produce self-organized nanoparticles (tubes, needles etc.) over nearby area. Room temperature photoluminescence spectra of the nanoparticles exhibit the emission band at 395 nm with semi-regular narrow spikes (<1 nm) with low threshold and non-linear growth with power greater 2 at photo excitation increase, which is typical for multi-mode lasing. Estimation of electron-hole pair concentration and temperature dependence of the average lasing energy prove that the lasing is originated from a scattering of free electrons on electron-hole pairs correlated. It was shown that self-organized nanoparticles exhibited better conditions for the lasing through stronger light scattering and guiding.
AB - A simple laser-assisted method to transform metallic Zn to a ZnO-based random lasing medium is reported. The method uses Nd+3 laser-induced air breakdown to treat the surface of a Zn target in oxygen atmosphere, and thus produce self-organized nanoparticles (tubes, needles etc.) over nearby area. Room temperature photoluminescence spectra of the nanoparticles exhibit the emission band at 395 nm with semi-regular narrow spikes (<1 nm) with low threshold and non-linear growth with power greater 2 at photo excitation increase, which is typical for multi-mode lasing. Estimation of electron-hole pair concentration and temperature dependence of the average lasing energy prove that the lasing is originated from a scattering of free electrons on electron-hole pairs correlated. It was shown that self-organized nanoparticles exhibited better conditions for the lasing through stronger light scattering and guiding.
KW - Electron-pair scattering
KW - Nanoparticles
KW - Random lasing
KW - Self-organization
KW - ZnO
KW - ROOM-TEMPERATURE
KW - PHOTOLUMINESCENCE
KW - EXCITATION
KW - QUANTUM
KW - ZINC-OXIDE
KW - LIGHT
KW - EPITAXY
KW - STIMULATED-EMISSION
KW - CDS
KW - GAIN
UR - http://www.scopus.com/inward/record.url?scp=85070238331&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/random-lasing-zno-selforganized-nanoparticles-produced-laser-induced-breakdown
U2 - 10.1016/j.jlumin.2019.116668
DO - 10.1016/j.jlumin.2019.116668
M3 - Article
AN - SCOPUS:85070238331
VL - 215
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
M1 - 116668
ER -
ID: 48581594