Barium borate is an inorganic substance with the chemical formula Ba( BO2) 2. It can exist as a hydrate, a dehydrated form, a white powder, or an anemic crystal. There are 2 various types of heat phase (α-BBO) as well as low temperature phase (β-BBO), and also the phase transition temperature is 925 ℃.
β-BBO crystal growth has actually been researched for greater than twenty years, and has actually ended up being an extremely extensively utilized nonlinear optical material, while α-BBO has been less researched. α-BBO is an optimal UV birefringent crystal with facility symmetry as well as non-linear effect, but it has a good birefringence index, specifically in the ultraviolet band with a high transmission proportion (95%), passage range of 189nm ~ 35000nm, secure physical and also chemical properties, excellent mechanical properties.
α-BBO crystals have exceptional optical residential properties such as huge refractive index and also vast passage variety, and are widely utilized in optical deflection modern technology, high power laser and ultrafast laser applications. It is mainly used to make ultraviolet polarization prisms such as Grantler prism, Wollaston prism, high power optical isolator and team speed mismatch compensator of ultrafast laser.
Nonlinear optical crystals are those that show more than quadratic nonlinear optical impacts to laser extreme electric area. Nonlinear optical crystal is a type of functional product, in which frequency doubling (or "regularity conversion") crystal can be utilized to transform laser wavelength, so as to expand the tunable variety of laser, which has crucial application worth in laser technology area.