15 results about "Strontium borate" patented technology

A method for growing a periodically poled nonlinear crystal may comprise introducing a seed crystal into a melt to form a seed-melt mixture, wherein the seed crystal may comprise strontium tetraborate (SBO) and / or lithium triborate (LBO), and wherein the melt comprises a mixture of Sr, B, and O and / or a mixture of Li, B, and O. The method may further comprise heating the seed-melt mixture to a predetermined temperature until the periodically poled nonlinear crystal forms.

The invention provides a permanent magnetic ferrite and a preparation method and application thereof. The preparation method comprises the following steps: mixing a permanent magnetic ferrite pre-sintering material, silicon dioxide and a calcium borate strontium additive for the first time to obtain the permanent magnetic ferrite. According to the invention, the calcium strontium borate additive is added, the calcium strontium borate additive contains boric acid ions, the boric acid ions have good affinity with ferrite, and the secondary addition of boric acid can significantly improve the microstructure of a magnet, so that the comprehensive performance of the permanent magnetic ferrite is improved.

The invention discloses a thorium-doped strontium tetraborate crystal as well as a preparation method and application thereof, the chemical formula of the thorium-doped strontium tetraborate crystal is ThxSr1-xB4 + yO7 (Th SBO), and the thorium-doped strontium tetraborate crystal grows by adopting a solution method. The Th: SBO crystal disclosed by the invention is low in melting point, simple in component and beneficial to realizing high-quality crystal growth; the material has a wide band gap, has high transmittance in a vacuum ultraviolet band, is beneficial to reduction of absorption loss in a nuclear transition luminescence band, and is beneficial to excitation and detection of a nuclear transition signal; the SBO crystal is a random quasi-phase matching (RQPM) nonlinear optical crystal, 296.76 nm narrow linewidth laser 148.38 nm frequency doubling light can be used as an excitation source of the nuclear light clock through frequency doubling, and a Th host crystal and a frequency doubling crystal are combined, so that the complexity of a system is remarkably simplified, and a core material is provided for miniaturization of the nuclear light clock.

A method for growing a periodically polarized nonlinear crystal may include placing a seed crystal in a melt to form a seed crystal melt mixture, the seed crystal comprising at least one of strontium tetraborate (SBO) or lithium triborate (LBO), and the melt comprising at least one of a mixture of Sr, B, and O or a mixture of Li, B, and O. The method may further include heating the seed crystal melt mixture to a predetermined temperature until a periodically polarized nonlinear crystal is formed.

The invention provides a method for growing a strontium tetraborate (SrB4O7) crystal. The method includes lowering a seed crystal into a melt having a mixture of sources including Sr, B, O, and Cl. The method also includes heating and melting the mixture to a temperature sufficient to form strontium tetraborate crystals.

A system for frequency conversion is disclosed. The system includes a nonlinear crystal waveguide formed from strontium tetraborate (SBO) or lithium triborate (LBO). This system is used for second harmonic generation or sum-frequency generation to produce laser output light having wavelengths in the range of about 120-200 nm. Inspection systems, lithography systems and cutting systems incorporating the frequency conversion system are also described.

This invention relates to a compound strontium borate nitrate and a strontium borate nitrate nonlinear optical crystal, as well as their preparation methods and uses. The chemical formula of the compound is Sr3B9O. 16 (NO3), with a molecular weight of 678.16, was prepared using a vacuum-sealed tube method; the chemical formula of this crystal is Sr3B9O. 16 (NO3), with a molecular weight of 678.16, belongs to the monoclinic crystal system and has a space group of Cc The unit cell parameters are a =11.2574(9)Å, b =6.6400(9)Å, c =18.1027(13)Å, Z=4, V=1348.9(2)Å 3 It is prepared using a high-temperature melt method or hydrothermal method under vacuum sealing conditions. Its nonlinear optical effect is approximately three times that of KDP, and its birefringence is 0.088@546 nm. This method has advantages such as simple preparation, short growth cycle, low toxicity of starting materials, and minimal harm to humans. Sr3B9O obtained by the method described in this invention... 16 (NO3) Nonlinear optical crystals have stable physicochemical properties, large nonlinear effects, and can be applied to phase-matching wavelengths in the ultraviolet band. They can be widely used in nonlinear optical devices such as frequency doubling converters and optical parametric oscillators.

A nonlinear crystal 300 comprising stacked strontium tetraborate SrB4O7 (SBO) crystal slabs 335-1, 335-2, 335-3, 335-4 cooperatively configured to produce a periodic structure for quasi-phase matching (QPM) is used in the final frequency doubling stage 230A, 230B of the laser assemblies 200A, 200B to produce laser output light 239A, 239B having a wavelength in the range of approximately 180 nm to 200 nm. One or more elementary laser beams 211A, 211B are frequency doubled, down-converted, and / or summed using one or more frequency conversion stages 220A, 220B-1, 221B, 222B to produce intermediate frequency light 212A, 214B having a corresponding wavelength in the range of about 360 nm to 400 nm, and then a final frequency conversion stage 130 utilizes the nonlinear crystal 300 to double the frequency of the intermediate frequency light 212A, 214B to produce the desired laser output light 239A, 239B at high power. Methods, inspection systems, lithography systems, and cutting systems incorporating the laser assembly are also described.

This invention relates to the compounds strontium lanthanum chloroborate and barium lanthanum chloroborate, as well as nonlinear optical crystals of strontium lanthanum chloroborate and barium lanthanum chloroborate, their preparation methods, and their uses. The general chemical formula for both the compounds and crystals is A3La4B3O. 13 Cl, where A = Sr, Ba, space group P63, belongs to the hexagonal crystal system, and cell parameter Z = 2. The compounds lanthanum strontium chloroborate and lanthanum barium chloroborate are synthesized by a solid-state reaction method. The nonlinear optical crystals of lanthanum strontium chloroborate and lanthanum barium chloroborate are grown using a high-temperature melt method. This material can be used to manufacture second harmonic generators, up-down frequency converters, optical parametric oscillators, etc.

A method for constructing a periodically-poled nonlinear crystal may include implanting ions in a bulk crystal of strontium tetraborate (SBO) or lithium triborate (LBO) to generate a damaged layer at a predetermined depth, attaching a handle material to the surface of the bulk crystal, cleaving the bulk crystal at the damaged layer to generate a thin plate, and polishing the thin plate to a thickness suitable for quasi-phase-matching (QPM) to generate laser output light having wavelengths in the range of about 120-200 nm. The surfaces of thin plates generated in this way are optically contacted, and resulting stacks are diced and arranged to generate many-layered QPM crystals. Methods, inspection systems, lithography systems and cutting systems incorporating the laser assembly are also described.

A system for frequency conversion is disclosed. The system includes a nonlinear crystal waveguide formed from strontium tetraborate (SBO) or lithium triborate (LBO). This system is used for second harmonic generation or sum-frequency generation to produce laser output light having wavelengths in the range of about 120-200 nm. Inspection systems, lithography systems and cutting systems incorporating the frequency conversion system are also described.

A method for growing a strontium tetraborate (SrB4O7) crystal is provided. The method involves immersing a seed crystal in a melt containing a mixture of a source of Sr, B, O, and Cl. The method also includes heating and melting the mixture to a temperature sufficient to form a strontium tetraborate crystal.

A method for growing a periodically poled nonlinear crystal may include placing a seed crystal into a melt to form a seed crystal melt mixture, where the seed crystal may include at least one of strontium tetraborate (SBO) or lithium triborate (LBO), and where the melt includes at least one of a mixture of Sr, B, and O or a mixture of Li, B, and O. The method may further include heating the seed melt mixture to a predetermined temperature until the periodically poled nonlinear crystal is formed.

A method for constructing a periodically-poled nonlinear crystal may include implanting ions in a bulk crystal of strontium tetraborate (SBO) or lithium triborate (LBO) to generate a damaged layer at a predetermined depth, attaching a handle material to the surface of the bulk crystal, cleaving the bulk crystal at the damaged layer to generate a thin plate, and polishing the thin plate to a thickness suitable for quasi-phase-matching (QPM) to generate laser output light having wavelengths in the range of about 120-200 nm. The surfaces of thin plates generated in this way are optically contacted, and resulting stacks are diced and arranged to generate many-layered QPM crystals. Methods, inspection systems, lithography systems and cutting systems incorporating the laser assembly are also described.

To fill the need for a mode-locked or CW laser that generates radiation in the range shorter than 133 nm and is suitable for use in inspection of photomasks, reticles, and / or wafers.SOLUTION: A nonlinear crystal including stacked Strontium tetraborate SrB4O7 crystal plates is configured to create a periodic structure for quasi-phase matching and is used in a final frequency conversion stage of the laser assembly to generate laser output light having a wavelength in a range of 125 nm to 183 nm. One or more fundamental light beams having fundamental wavelengths between 1 and 1.1 μm are doubled and / or summed using a plurality of intermediate frequency conversion stages to generate one or more intermediate light beam frequencies, and then the final frequency conversion stage utilizes a nonlinear crystal to either double a single intermediate light beam frequency or to sum two intermediate light beam frequencies to generate a desired laser output light at high power and photon energy levels.SELECTED DRAWING: Figure 1