FJFJ Crystal Technology Corporation is a global leader in nonlinear optical crystals, with a continuously diverse product range
In 1986, the company provided the first BBO (barium metaborate) crystal to the Fujian Institute of Material Structure, Chinese Academy of Sciences;
The company has obtained patents for LBO (lithium triborate) and BBO (low-temperature barium metaborate) crystals, and has grown into the world's largest manufacturer of LBO, BBO crystals and their components, with the world's largest market share.
The company mainly provides key components of laser systems such as solid state lasers and fiber lasers, and some precision optical components are used in optical communication, AR, laser radar, semiconductor equipment, scientific research and other fields;
The main products cover three categories: crystal components, precision optical components, and laser devices:
Crystal components:
Including various functional crystals such as nonlinear optical crystals, laser crystals, magneto-optical crystals, birefringent crystals, acousto-optic and electro-optic crystals, scintillation crystals, etc;
Precision optical components:
Including window lenses, reflectors, prisms, polarizers, cylindrical mirrors, spherical lenses, aspherical lenses, waveplates, spectroscopes, diffraction gratings, and other characteristic optical components;
Laser devices:
Including magneto-optical devices, acousto-optic devices, electro-optic devices, drivers, fiber optic transmission systems, optical switches, optical lenses, etc.
Laser is widely used downstream, and FJFJ collaborates with leading global manufacturers
Laser is the most core component of laser equipment, and its performance determines the quality and power of the output beam of the laser equipment, occupying the core central position of the laser industry chain.
Crystal materials are one of the key materials for lasers, and FJFJ has a global leading technological advantage in the field of nonlinear optical crystals.
The main uses of crystal materials include as working materials for solid-state lasers, nonlinear frequency conversion, magneto-optical materials, electro-optical materials, etc. They are mainly used in solid-state lasers and fiber lasers, as well as in the production of passive devices for optical communication (isolators, rotators, delayers, polarizers, circulators, etc.).
Among them, nonlinear optical crystals can realize laser frequency conversion, expand laser wavelength, modulate laser intensity and phase, and realize holographic data storage of laser signals, self pumped phase conjugation to eliminate wavefront domain changes, etc.
From the original quartz frequency doubling crystal, nonlinear crystal materials such as lithium niobate, potassium dihydrogen phosphate, potassium deuterium phosphate, lithium iodate, potassium titanyl phosphate, barium metaborate, lithium triborate and potassium niobate gradually appear.
Widely used in laser frequency doubling, sum frequency, difference frequency, optical parametric amplification, electro-optic modulation, electro-optic deflection, etc.
Among them, LBO (lithium triborate), BBO (barium metaborate) and KTP (potassium titanyl phosphate) are three typical nonlinear optical crystals, which are widely used.
After years of research and development and improvement, crystal materials such as LBO and BBO have built a complete processing chain and accumulated mature processes and technologies. Currently, they are leading the world in the fields of LBO and BBO.
Magneto optic crystals are key materials used for making Faraday rotators and isolators. In magneto-optical crystals, the company mainly provides products including TGG crystals (terbium gallium garnet) and TSAG (terbium scandium aluminum garnet) crystals.
Among them, TGG crystal is the optimal magneto-optical material for making Faraday rotators and isolators, with main advantages including high magneto-optical constant (35 Rad T-1 m-1), high thermal conductivity (7.4W m-1 K-1), and high laser damage threshold (>1GW/cm2).
And TSAG crystal is a key material for the next generation of fiber lasers, mainly used for making Faraday rotators and optical isolators. As an ideal magneto optical crystal for both visible and infrared wavelengths, TSAG crystal has the advantages of high Verde constant and excellent chemical and optical properties, making the isolator smaller and more convenient.
With its technological and product advantages in nonlinear optical crystals and laser crystals, FJFJ collaborates with global external laser manufacturers.
After more than thirty years of development, the company has accumulated rich experience in crystal growth, precision optical processing, device synthesis, and other areas.
In the field of lasers, the company can provide various types of crystal materials such as nonlinear optical crystals and laser crystals, as well as various types of laser devices such as magneto-optical devices, acousto-optic devices, and electro-optic devices, as well as various types of precision optical components such as aspherical lenses, spherical lenses, window plates, prisms, wave plates, and gratings. The product series continues to be rich.
In the field of optical communication
FJFJ can provide a series of products used in the field of optical communication, including diffraction gratings for optical communication, fiber optic transmission devices, and so on.
Diffraction grating in optical communication is a device used to separate and combine optical signals of different wavelengths, which is often used in optical fiber communication systems
The reflection/transmission gratings produced by the company are suitable for WSS and other optical communication applications.
Fiber optic transmission devices are used to transmit optical signals in optical fibers, including fiber amplifiers, fiber isolators, fiber couplers, etc. The company can provide various fiber optic transmission devices such as transmission cables, fiber collimators, bandpass filters, etc.
In the field of optical communication, FJFJ can provide customers with efficient and stable solutions.
Collaborate with global leader Lumentum to benefit from domestic substitution opportunities in the optical communication industry. In the field of optical communication, the company's main customer is Lumentum.
Lumentum is a leading global provider of telecommunications, data center optical communication, and 3D sensing solutions, and acquired Coherent, one of the world's largest laser manufacturers, in 2021.
The clients cover leading domestic and international manufacturers, including Lumintum, Coherence, Spectral Physics, TRUMPF, IPG, Han's Laser, Inno Laser, Yinggu Laser, Huari Laser, Ruike Laser, Chuangxin Laser, Jepote, and others.