We have studied the sensitivity and noise of optically gated dipole receivers made from ion implanted Si and GaAs in an optimized time domain THz spectrometer. The spectrometer uses a room temperature, dc biased, semi-insulating GaAs stripline source capable of generating up to 30 microW average power. The 10% amplitude system bandwidth for 10 microm (50 microm) dipole receivers is 3 THz (1.5 T...

The effect of Zn:Se ratio on the photoconducting properties of ZnSe thin films has been studied. The ZnSe thin films have been deposited onto glass substrates by the spray pyrolysis method, the substrate temperature kept at 430◦C using mixed aqueous solutions of ZnCl2 and SeO2 with different Zn:Se ratios. Their electrical, structural, and photoconductivity properties have been studied. The valu...

Single crystal of Thiourea added L-Histidine (TULH) have been grown by slow evaporation solution growth technique. Good optical quality single crystal of dimension up to 34x5x8mm 3 have been obtained. To identify the morphology and structure, the as grown crystals were subjected to single crystal and powder x-ray diffraction analysis. The different mode of vibrations present in the crystal was ...