Naslov
Experimental Observation of Optical Amplification in Silicon Nanocrystals

Autori
Ivanda, Mile ; Desnica, Uroš ; White, C.W. ; Kiefer, W.

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Towards the First Silicon Laser

Urednik/ci
Pavesi, L. ; Gaponenko, S. ; Del-Negro, L.

Izdavač
Kluwer Academic Publishers

Godina
2003

Raspon stranica
191-196

ISBN
1-4020-1193-8

Ključne riječi
optical amplification, silicon, nanocrystals, laser

Sažetak
We have measured optical amplification in cw laser pumped silicon nanocrystals. The silicon nanocrystals of 3.5 and 5.5 nm in mean diameter and of 0.5x10¨22 and 2.5x10¨22 cm-3 excess silicon concentration, respectively, were prepared by ion implantation in fused silica substrate followed by high temperature thermal annealing. By using variable strip length method the amplified spontanous emission spectra (A.S.E.) were measured at room temperature using different cw laser excitations wavelength. The stimulated emission was observed on the sample with larger silicon concentration, only. With red excitation the A.S.E. peak at 922 nm of 8 nm full width at half maximum, of net modal gain (g-alpha)=33 cm-1 and strong directionality properties was observed

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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