Electrical and Gas Sensor Properties of Nb(V) Doped Nanocrystalline β-GaO.

A flame spray pyrolysis (FSP) technique was applied to obtain pure and Nb(V)-doped nanocrystalline β-GaO, which were further studied as gas sensor materials. The obtained samples were characterized with XRD, XPS, TEM, Raman spectroscopy and BET method. Formation of GaNbO phase is observed at high annealing temperatures.

Frequency conversion of mid-IR lasers into the long-wavelength domain of 12-20 µm with AgGaSe, BaGaGeSe and PbInTe nonlinear crystals.

Difference frequency generation under mixing of repetitively-pulsed CO- and CO-laser radiation in AgGaSe, BaGaGeSe and PbInTe nonlinear crystals was studied. Efficiency and refractive indices were examined for this frequency conversion into the long-wave domain of ∼12-20 µm in the mid-IR. The highest frequency conversion efficiency of 10 was obtained for a relatively new PbInTe crystal, which is an order of magnitude higher than previous results.

Verification of an integral figure of merit for mid-IR nonlinear crystals.

The examination and verification of a simple integral figure of merit for nonlinear crystals, taking into account different crystal properties, was studied. The examination was carried out on the basis of experimental data on the broadband sum frequency generation of CO laser radiation in , , , GaSe, and mid-IR nonlinear crystals. Taking into account spectral and angular phase-matching bandwidths, the figure of merit provides the best agreement with the experiment and can be applied for qualitative, and even quantitative, comparison of the nonlinear crystals.

Sum frequency generation of multi-line slab radio frequency discharge carbon monoxide laser system with intracavity nonlinear BaGaGeSe crystal.

A compact repetitively pulsed broadband carbon monoxide (CO) laser system with intracavity frequency conversion, for which a nonlinear crystal was also used as an output coupler, was launched for the first time, to the best of our knowledge. The laser system simultaneously operated in two spectral ranges: CO laser fundamental band (4.9-6.

Isolation and sequence analysis of pCS36-4CPA, a small plasmid from sp. 36-4CPA.

A small plasmid designated pCS36-4CPA with a size of 5217 base pairs and G-C content of 50.74% was isolated from sp. 36-4CPA.