信光社 List of Products and Services

This comprehensive catalog introduces: - An overview of Shinko's business - Crystal growth methods - Representative crystals such as sapphire, SrTiO3, and rutile (TiO2). *For more details, please contact us or refer to the catalog.

• Glass

We consistently produce large sapphire crystals in-house (within Japan) using our original TSMG method. Ideal for the production and application of thick and large sapphire products! Features of our TSMG sapphire: - Constantly growing sapphire of the largest class in Japan (φ300×350mm) - Can be processed into any desired shape using NC - Options for high-transmission optical grade in the ultraviolet range (235nm and above) and relatively inexpensive semiconductor grade - Orders can be placed starting from just one piece *For more details, please contact us or refer to our catalog.

• Glass

We are a long-established sapphire manufacturing company with 77 years of history. Since we cultivate large sapphire crystals in-house, we can produce everything from fine products under 1mm to large windows of approximately 300mm, as shown in the photo. We excel at closely aligning with our customers' requirements from the design stage and collaboratively creating custom products that are optimal in terms of quality and cost. Inquiries for even a single piece are welcome, so please feel free to contact us. In addition to basic processing such as cutting, grinding, and polishing, we also accommodate special processing such as drilling, ultrasonic processing, laser processing, tube processing, and coating. Furthermore, please utilize our sapphire products, which have excellent chemical resistance, in semiconductor manufacturing processes that use strong acids and strong alkalis that would cause quartz glass to become opaque. *We are currently offering the results of chemical resistance tests for sapphire products. Technical documentation can be downloaded from the link below. 【Features】 ■ Chemically stable (almost insoluble in acids and alkalis, does not become opaque) ■ Wide transmission characteristics (UV to near-infrared (about 5μm)) ■ Hard (Vickers hardness: 1750 (A face)) ■ Heat resistant (melting point: 2040℃) ■ Good thermal conductivity (42W/mK, 25℃)

• Laser Components

Sapphire has the following characteristics: - Wide transmission properties (UV to near-infrared (approximately 5μm)) - Hardness (Vickers hardness: 1750 (a-plane)) - Chemically stable (almost insoluble in acids and alkalis, does not lose transparency) - Heat resistant (melting point: 2040°C) - Good thermal conductivity (42W/mK at 25°C) Due to its strength to withstand harsh environments and excellent optical properties, it is one of the materials that can solve the challenges of glass and fluorides. In recent years, it has become possible to grow large crystals of about 300mm, allowing for a wider range of applications.

• Laser Components

Sapphire has the following characteristics: - Wide transmission properties (UV to near-infrared (approximately 5μm)) - Hardness (Vickers hardness: 1750 (a-plane)) - Chemically stable (almost insoluble in acids and alkalis, does not lose transparency) - Heat resistant (melting point: 2040°C) - Good thermal conductivity (42W/mK at 25°C) Due to its strength to withstand harsh environments and excellent optical properties, it is one of the materials that can solve the challenges of glass and fluorides. In recent years, it has become possible to grow large crystals of about 300mm, allowing for a wider range of applications. *For more details, please contact us or refer to the catalog.

• Etching Equipment

Sapphire crystals have the following characteristics: - Heat resistance (up to 2000°C) - Wear resistance (Mohs hardness of 9) - Strength (more than five times that of tempered glass) - High thermal conductivity (more than 40 times that of glass) - High purity (over 99.99%) - Optical transparency: Transmits from UV to IR They are widely used as window materials that can solve challenges that cannot be achieved with glass or fluorides. In recent years, due to their optical properties and thermal conductivity at low temperatures, sapphire produced by Shinko Co. has been adopted as large mirrors for gravitational wave telescopes, expanding their applications. We also accept special processing requests, so please feel free to consult with us.

• Fine Ceramics

【Optimal for Epitaxial Growth】 Oxide substrates for thin film growth have been contributing to advancements in science and technology since the 1980s, providing substrates such as SrTiO3 and sapphire for high-temperature superconducting thin films and GaN. For epitaxial growth substrates, the crystal quality, surface smoothness, flatness, and the presence or absence of crystal lattice strain at the very surface are crucial. Our company has achieved consistent in-house production from crystal growth to processing through years of technological accumulation. With our high-precision processing technology, we continue to provide high-quality crystal substrate surfaces. We always keep standard specifications in stock and deliver them within approximately 10 days after order placement. We also offer custom-made options for surface orientation, shape, and off-angle according to your needs, so we handle products with specifications not listed in our lineup. Please feel free to contact us. *For more details, please inquire or refer to our catalog.*

• Other metal materials

The SrTiO3 (STO) substrates from Shinko Electric Industries have been a long-selling product favored by thin film researchers worldwide since the 1980s. We also offer options such as Nb-doped products with conductivity, step and terrace treatment, and break groove (chocolate bar-shaped) processed items.

• Ceramics

- TiO2 has three types of crystal structures, but Shinkosha offers crystals with the rare rutile structure found globally. - Due to its high refractive index, birefringence, and wide transmission characteristics, it is used as an optical core component. - In the field of photocatalysts, it is also used for fundamental research that takes advantage of the characteristics of single crystals. - With its good crystal quality and the ability to perform step & terrace treatment on the surface, it is widely used as a substrate for thin film deposition.

• Other network tools

Through hole processing, laser marking, chamfering, and olifura processing.

• Other semiconductors

Since it uses high-purity (99.99%) sapphire single crystal (α-alumina), there are almost no voids in the material, which helps reduce gas generation during deposition. For anti-reflective coatings, hard coatings, and chemical-resistant coatings, please make use of our alumina deposition materials, which are produced in a consistent process from crystallization to cleaning. 【Product Features】 - High-purity Al2O3 single crystal (purity: 99.99%) - Medium refractive index (1.63 @ 550nm) - Appearance: Three standard shapes - crushed, cut, and crescent-shaped

• others

Rutile single crystals are ideal for optical applications such as polarizers and spectroscopic prisms due to their high refractive index and significant birefringence. Additionally, they are very stable both thermally and chemically. Our company manufactures and processes high-quality rutile single crystals with few crystal defects. We take pride in being the world's leading producer of rutile raw stones.

• Other semiconductors

●Optical inline isolator for near-infrared light sources ●Compact size (based on a diameter of 5×39.5mm) ●Available for various applications, including special wavelengths (850nm, 1040nm, 2000nm), etc.

• Other semiconductors

The optical fiber sensor that has been commercialized this time belongs to the category of optical passive sensors among optical fiber sensors. The features of this sensor include the characteristics commonly found in general optical fiber sensors, such as strong resistance to electromagnetic noise, no need for power supply equipment, electrical insulation, and inherent explosion-proof properties, along with the advantage of enabling optical detection in a simple manner. Furthermore, the product incorporates design and manufacturing know-how accumulated by Shinko Corporation, which has been honed in the optical communication industry for over 10 years.

• Temperature and Humidity Control

The optical fiber sensor that has been commercialized this time belongs to the category of optical passive sensors among optical fiber sensors. The features of this sensor include the characteristics commonly found in general optical fiber sensors, such as resistance to electromagnetic noise, no need for power supply equipment, electrical insulation, and intrinsic explosion-proof properties, along with the advantage of enabling optical detection in a simple manner. Furthermore, the product incorporates design and manufacturing know-how accumulated by Shinko Corporation, honed over more than 10 years in the optical communication industry.

• Other optical parts

The optical fiber-type sensor that has been commercialized this time belongs to the category of optical passive sensors among optical fiber-type sensors. The features of this sensor include the characteristics common to general optical fiber-type sensors, such as resistance to electromagnetic noise, no need for power supply equipment, electrical insulation, and inherent explosion-proof properties, along with the advantage of being able to detect light in a simple manner. Furthermore, the product incorporates the design and manufacturing know-how of Shinko Corporation, which has been honed over more than 10 years in the optical communication industry.

• Other optical parts
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• Sensors

The optical fiber sensor that has been commercialized this time belongs to the category of optical passive sensors among optical fiber sensors. The features of this sensor include the characteristics common to general optical fiber sensors, such as resistance to electromagnetic noise, no need for power supply equipment, electrical insulation, and intrinsic explosion-proof properties, along with the advantage of being able to detect light in a simple manner. Furthermore, the product incorporates design and manufacturing know-how accumulated by Shinko Corporation, which has been honed over more than 10 years in the optical communication industry.

• Other optical parts
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• Sensors

The optical fiber sensor that has been commercialized this time belongs to the category of optical passive sensors among optical fiber sensors. The features of this sensor include the characteristics typically found in general optical fiber sensors, such as resistance to electromagnetic noise, no need for power supply equipment, electrical insulation, and inherent explosion-proof properties, along with the advantage of enabling optical detection in a simple manner. Furthermore, the product incorporates the design and manufacturing know-how of Shinko Corporation, which has been honed over more than 10 years in the optical communication industry.

• Other optical parts