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The crystals exist in the high-temperature α phase and low-temperature β phase, abbreviated as BBO; both phases are birefringent, and BBO is a common nonlinear optical material. Barium borate was discovered and developed by Chen Chuangtian and others of the Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences .
Schematic of SPDC process. Note that conservation laws are with respect to energy and momentum inside the crystal.. Spontaneous parametric down-conversion (also known as SPDC, parametric fluorescence or parametric scattering) is a nonlinear instant optical process that converts one photon of higher energy (namely, a pump photon) into a pair of photons (namely, a signal photon, and an idler ...
The crystal is important in superconductor research and can allow the replacement of excimer laser with solid-state ones in photolithography used in the semiconductor and the medical industries. [3] Until at least 2009, Chen's laboratory at the Fujian Institute of Research on the Structure of Matter was the only place in the world that could ...
Crystals used in transverse Pockels cells include BBO, LiNbO 3, CdTe, ZnSe, and CdSe. [5] The long sides of the crystal are coated with electrodes. Optical retardance Δφ for transverse Pockels cells is similar to that of longitudinal Pockels cells but it is dependent on crystal dimensions. The quarter wave or half wave voltage requirements ...
BBO may stand for: Barium boron oxide, another name of barium borate; Big Bang Observer, planned space gravitational wave observatory; IATA code for Berbera Airport "BBO (Bad Bitches Only)", a song by Migos from the album Culture II; Beta barium borate (β-BaB 2 O 4) crystal; Bundesbahn Österreich, a former name for the Austrian Federal Railways
The material for the crystals is usually a wide-bandgap inorganic crystal, or in some cases a suitable organic polymer. Some popular materials in current use are potassium titanyl phosphate (KTP), lithium niobate, and lithium tantalate. The periodic structure is created in the crystal using a range of techniques.
Lithium niobate (Li Nb O 3) is a synthetic salt consisting of niobium, lithium, and oxygen.Its single crystals are an important material for optical waveguides, mobile phones, piezoelectric sensors, optical modulators and various other linear and non-linear optical applications. [6]
Beta barium borate (BBO) – another popular non-linear crystal; Lithium triborate (LBO) – another popular non-linear crystal; Monopotassium phosphate (KDP) – another popular non-linear crystal; Non-linear optics; Potassium titanyl phosphate (KTP) – another popular non-linear crystal; Second-harmonic generation (SHG) Third-harmonic ...