2020年2月17日星期一

Scintillation Crystal Material -- Barium Tungstate

Barium tungstate is an important scintillation crystal material with excellent photoluminescence properties.

Barium tungstate has potential applications in the fields of nuclear spin hole, Raman scattering, solid-state laser and so on. As the core component of the vacuum electronic device, the cathode must have the characteristics of large emitting current, low operating temperature, low evaporation rate and long service life, barium tungstate is a raw material that takes into account the high current, low evapotranspiration, long life cathode.

barium tungstate crystal image

Raman frequency shift technique is a nonlinear optical technique for obtaining a new wavelength laser by using the stimulated Raman scattering effect of Raman medium, barium tungstate crystal is a promising Raman crystal. In recent years, all solid state Raman lasers based on stimulated Raman scattering (SRS) effects of crystalline materials have become an attractive luminescent spot, the laser output from ultraviolet to near infrared band can be obtained by barium tungstate crystal, these include yellow, orange, laser, and eye safe lasers for medical, radar, remote sensing and ocean exploration applications.

Compared with the commonly used barium nitrate, barium tungstate crystal has the characteristics of non deliquescence, wide transparence, excellent thermal mechanical properties, it is easier to obtain large-size single crystals by Czochralski method, moreover, both the nanosecond pulse and picosecond pulse laser pumped higher Raman gain. These advantages make barium tungstate crystals a very promising Raman laser crystal for practical all solid state Raman lasers.

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