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Gold nanorods (GNRs) with surface plasmon resonance peak at 1063.8 nm were fabricated and experimentally exploited as the single and combined saturable absorber (SA) in a $Q$-switched Nd:YAG laser for the first time. In the situation using GNRs as a single SA, the maximum pulse energy of 19 $\mu\hbox{J} $ was achieved at a pulse repetition rate of 20 kHz. However, due to the small effective modulation...
In this paper we elaborate on our development of silicon photonic integrated circuits operating at wavelengths beyond the telecommunication wavelength window. Silicon-on-insulator waveguide circuits up to 3.8 μm wavelength are demonstrated as well as germanium-on-silicon waveguide circuits operating in the 5–5 μm wavelength range. The heterogeneous integration of III-V semiconductors and IV-VI semiconductors...
Thiol-capped CdSe quantum dots are synthesized rapidly in aqueous solution assisted by microwave irradiation without any poisonous materials. The growth rate of quantum dots is greatly enhanced in this current microwave synthesis. The narrow size distribution (~30nm) of CdSe quantum dots is similar to the oil samples. The results indicate that the photoluminescence quality of quantum dots is improved...
Many fibre-optic telecommunications systems exploit the spectral ‘window’ at 1310 nm, which corresponds to zero dispersion in standard single-mode fibres (SMFs). In particular, several passive optical network (PON) architectures use 1310nm for upstream signals,1 and so compact, low-cost and low-power modulators operating at 1310 nm that can be integrated into Si electronic-photonic integrated circuits...
This paper reviews atomic layer thermopiles - anisotropic coefficients of thermoelectric thin film materials - their description, research into new materials, and applications.
Ultrafast trapping and recombination processes are analyzed in GaMnAs layers with a series of Mn concentrations. Anomalous magnetization dependent coherent signal is presented regarding the ferromagnetism of the sample.
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