کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1547452 | 997635 | 2009 | 4 صفحه PDF | دانلود رایگان |

Light amplification has been studied in Si nanocrystals (Si-nc) based waveguides, where the active layers were obtained by ion-beam synthesis. Pump and probe measurements have been performed in both channel and rib-loaded waveguides, using short ns optical pulses from a Nd:Yag laser for pump and continuous probe signals at 650, 780 and 830 nm. The probe was quenched by carrier absorption under pumping, except at 650 nm, where a small signal enhancement was observed. On the other hand, optical amplification at 1.54μm has been investigated in planar waveguides based on different silicates glasses codoped with Si-nc and Er, by means of the variable stripe length technique. Positive internal gain was found only in aluminium-silicates, suggesting that this can be the best host matrix for the Si-nc:Er system in order to achieve optical amplification.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 6, May 2009, Pages 1044–1047