Tellurium dioxide crystal (TeO2) is the strong oxide of tellurium. It occurs in two various forms, the yellow plagiotic mineral β-TeO2 tellurite and also the synthetic colorless tetragonal (paraturite) α-TeO2. The majority of the information concerning response chemistry has actually been obtained in studies including pariturite, α-TeO2.
The natural mineral of tellurium dioxide is “flavuride”. Molecular weight 159.60. Colorless crystal, melting point 732.6 ℃. Dicrystalline form: Tetragonal kind originated from nitric acid remedy, resembling an octahedral kind. Family member density 5.67( 15 ℃). After heating, it turns yellow, melts into dark yellow liquid, and cools to acicular crystal (ordnance system) with a loved one density of 5.91( 0 ℃). Insoluble in water.
Adducts as well as salts are conveniently liquified in concentrated strong acids; It is also easily soluble in caustic alkali solution to develop tellurite. Insoluble in ammonia. Tellurium is generated by combustion in oxygen or by reaction of tellurium with cold focused nitric acid as well as dissipation of the response option.
Preparation method of tellurium dioxide crystal
Preparation approach: Reaction of important tellurium powder with nitric acid, heating to complete reaction of tellurium powder to stop launching nitrogen oxide, evaporative cooling crystallization to get alkali tellurium Te2O3(OH)NO3, as well as heating decomposition of this product at 400 ~ 430 ℃.
Features of tellurium dioxide crystal
Tellurium dioxide (TeO2) crystal is a kind of acoustooptic crystal material with superb homes. It has exceptional acoustooptic residential or commercial properties, high all-natural wealth 130Te and also double β decay properties, and also premium quality element.
Characteristics of TeO2 crystal:
- High refractive index
- Reduced sound depletion
- Premium quality aspect
- Superb acoustic and also optical residential properties
- Large audio as well as light quality factor
- High transparency to visible light
Application
Tellurium dioxide powder is made use of to grow TeO2 single crystal or make acoustooptic products. It is a conditional glass creating representative as well as can be utilized as an additive in semiconductor components, conductive pastes as well as electroplating solutions.
Widely made use of in acoustooptic deflectors, acoustooptic modulators, acoustooptic harmonics, acoustooptic filters, tunable filters as well as various other kinds of acoustooptic devices.
Under the very same aperture, the resolution can be improved by orders of magnitude. On the other hand, the acousto-optic tools made of tellurium oxide have the advantages of fast response rate, tiny driving power, high diffraction efficiency, stable as well as reputable performance.
Consequently, TeO2 crystal is a sort of acoustooptic tool material with broad application prospects, especially acoustooptic modulator as well as acoustooptic harmonizer, which has actually been widely utilized in optical computing, optical communication and also optical microscopic imaging modern technology.
Acoustooptic modulator
Acoustioptic modulation is a type of exterior inflection technology. The tool that regulates the change of laser light beam strength is typically called modulator. The regulated signal is acted on the transducer in the form of electric signal (amplitude modulation), and afterwards transformed right into the wave area altering in the form of electrical signal. When the light wave travels through the medium, the optical service provider is modulated and ends up being the intensity modulated wave “lugging” details.
Acousto-optic modulator has the characteristics of huge modulation data transfer variety, short rise time, high damage threshold, high extinction proportion, little dimension, high modulation performance, very easy coding and easy to use. It is commonly used in strength modulation, laser cooling, laser Doppler velocity dimension, laser Doppler vibration measurement (LDV). Laser linewidth measurement, material handling, LIDAR, printing, drilling, marking, micro-machining as well as other associated fields.