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Optics Materials And Appliions

Reflective optics manufactured from SUPERSiC silicon carbide material are uniquely suited to offer high optical quality mirrors for demanding appliions. Substrates made from this material are the preform foundation onto which chemical vapor deposited silicon carbide, or optical-grade silicon coatings are applied.

Silicon Carbide Optical Telescopes in ''Small Satellite

Silicon Carbide Optical Telescopes in "Small Satellite" Constellations Flemming Tinkeri Chip Raganl Alberto Boddenl Kevin Dahlbergl Aperture Optical Sciences 6. Conclusion We have obtained improvements in the fabriion process for Silicon Carbide Telescope mirrors. Optical quality enables the diffraction

CERAFORM Silicon Carbide - Northrop Grumman

space-borne mirrors and structures, cryogenic mirrors, fast response scan mirrors, and high heat flux appliions, thanks to its unique coination of key enabling properties. CERAFORM SiC is an optical grade reaction bonded silicon carbide, consisting of a ceramic matrix of free silicon containing a . bimodal distribution of SiC grains.

High Silicon Content (AlSi, Si ≥ 40 %) As …

01.11.2016· High Silicon Content (AlSi, Si ≥ 40 %) As Mirror Substrate For High Performance Cryogenic Metal Optics. Mirrors made of zero expansion glass ceramic or silicon carbide (SiC) can be used for cryogenic appliions. However, this requires enormous efforts concerning manufacturing and mounting.

Silicon Mirrors – ULO Optics

Silicon Mirrors Raw material properties The optical and mechanical properties of silicon are described in section M4.0. Silicon mirrors are manufactured using ‘mirror-grade’ (non-transmissive) monocrystalline silicon. Silicon lenses are manufactured using monocrystalline ‘optical grade’ (transmissive) material. Dimensional tolerances Standard ULO Optics products …

High-Thermal-Conductivity SiC and …

M. A. Pickering and J. S. Goela, “Silicon Carbide Mirror Substrate Repliion by Chemical Vapor Deposition,” Rome Laboratory Technical Report …

Micro defect detection on silicon carbide …

IEEE Xplore, delivering full text access to the world''s highest quality technical literature in engineering and technology. | IEEE Xplore Micro defect detection on silicon carbide mirror with high frequency ultrasound array scanning - IEEE Conference Publiion

Fabriion technique of large-scale …

Silicon carbide (SiC) is a new type candidate material for large-scale lightweight space mirror. Its low thermal distortion, high stiffness, high optical quality, and its dimensional stability are better than other traditional optical substrate materials such as ULE, Zerodure, Beryllium (Be) and so on. In this paper, the lightweight silicon carbide space mirror blank was fabried by …

Silicon Carbide (SiC): The Future of Power? …

01.11.2019· While many varieties and purities of silicon carbide exist, semiconductor-grade quality silicon carbide has only surfaced for utilization in the last few decades. How to Create Silicon Carbide The simplest silicon carbide manufacturing method involves melting silica sand and carbon, such as coal, at high temperatures―up to 2500 degrees Celsius.

Micro Defect Detection on Silicon Carbide …

Silicon carbide (SiC) has long been recognized as an attractive mirror material due to its superior mechanical and thermal properties when compared to conventional optical materials.

Foam core enables stiff lightweight …

A skin of silicon carbide covers the light silicon carbide foam that forms the core of the 12.7cm-diameter mirror. In the next step, the SiC skin is covered with silicon. The reflective surface is made of polished silicon. In the fourth segment, this mirror is subjected to a high …

Silicon Carbide (SiC): The Future of Power? …

01.11.2019· While many varieties and purities of silicon carbide exist, semiconductor-grade quality silicon carbide has only surfaced for utilization in the last few decades. How to Create Silicon Carbide The simplest silicon carbide manufacturing method involves melting silica sand and carbon, such as coal, at high temperatures―up to 2500 degrees Celsius.

Silicon carbide (SiC) :: 에너진(주) ENERGYN …

04.11.2014· Silicon carbide (SiC) has long been recognized as an attractive mirror material due to its superior mechanical and. thermal properties when compared to conventional optical materials. However, the material properties of silicon carbide, which make the material attractive from a design standpoint, have often precluded its use when low cost and rapid

Silicon Carbide Mirror Datasheet -- Zygo …

Silicon carbide (SiC) has long been recognized as an attractive mirror material due to its superior mechanical and thermal properties when compared to conventional optical materials. However, the material properties of silicon carbide, which make the material attractive from a design standpoint, have often precluded its use when low cost and rapid delivery of an optical mirror …

Silicon carbide (SiC) :: 에너진(주) ENERGYN …

04.11.2014· Silicon carbide (SiC) has long been recognized as an attractive mirror material due to its superior mechanical and. thermal properties when compared to conventional optical materials. However, the material properties of silicon carbide, which make the material attractive from a design standpoint, have often precluded its use when low cost and rapid

Advancing aerospace materials - Company …

The answer was silicon carbide: lighter than metal or glass, it can be optically polished making it perfect for high performance lightweight mirrors. It also has excellent structural stability and thermal properties: vital for the accuracy of a telescope when temperatures in space plummet to …

Silicon Mirrors – ULO Optics

Silicon Mirrors Raw material properties The optical and mechanical properties of silicon are described in section M4.0. Silicon mirrors are manufactured using ‘mirror-grade’ (non-transmissive) monocrystalline silicon. Silicon lenses are manufactured using monocrystalline ‘optical grade’ (transmissive) material. Dimensional tolerances Standard ULO Optics products …

Ultra-lightweight C/SiC Mirrors and Structures

is still high. The manufacturing process The raw material used is a standard porous C/C rigid felt, which is made from short, randomly oriented (isotropic) carbon fibres Silicon-carbide (SiC) ceramic mirrors and structures are becoming increasingly important for lightweight opto-mechanical systems that must work in adverse environments.

Advanced Silicon Carbide Materials

Advanced Silicon Carbide Materials (ASCM) designs and manufactures high performance mirrors and telescopes made of CVC SiC® or composites. These precision-engineered optical products are used in a wide range of civilian, military and aerospace appliions.

THE LIGHTWEIGHT SILICON CARBIDE MIRROR OF A NEW TYPE

The silicon chloride and hydrogen are used in this technol ogy. It is necessary also to provide the package plan for eco logical and production safety in connection with high tox icity of chlorides. In our solution first in the world it is proposed to elaborate technology and construction of sili con carbide mirrors of a new type, at which an

Optical Kerr nonlinearity in a high-Q silicon …

We demonstrate a high-Q amorphous silicon carbide (a-SiC) microresonator with optical Q as high as 1.3 × 105. The high optical quality allows us to characterize the third-order nonlinear susceptibility of a-SiC. The Kerr nonlinearity is measured to be n2 = (5.9 ± 0.7) × 10−15 cm2/W in the telecom band around 1550 nm. The strong Kerr nonlinearity and high optical quality …

Advancing aerospace materials - Company …

The answer was silicon carbide: lighter than metal or glass, it can be optically polished making it perfect for high performance lightweight mirrors. It also has excellent structural stability and thermal properties: vital for the accuracy of a telescope when temperatures in space plummet to …

Silicon Carbide Mirror Datasheet -- Zygo …

Silicon carbide (SiC) has long been recognized as an attractive mirror material due to its superior mechanical and thermal properties when compared to conventional optical materials. However, the material properties of silicon carbide, which make the material attractive from a design standpoint, have often precluded its use when low cost and rapid delivery of an optical mirror …

Metal Mirrors - Inrad Optics

In addition to traditional glass mirrors, Inrad Optics employs proprietary single-point diamond machining and optical polishing methods to produce high quality metal optics from 5 mm to 1 meter diameter in a wide variety of materials and spherical and aspherical surface shapes.

Silicon Carbide - an overview | …

If silicon carbide cannot be polished efficiently at a high precision level, it becomes difficult to use this material in any optical or electrical device. As a nonmechanical or noncontact method of machining, CO 2 lasers can be used to directly machine silicon carbide without needing to worry about tool wear or low removal efficiency [5].

Method of Manufacture for a Lightweight, …

What is claimed is: 1. A method for manufacturing an aerospace mirror, comprising: obtaining a green mirror preform comprising porous carbon, silicon carbide (SiC), or both, the green mirror preform defining a front side of the aerospace mirror and a back side of the aerospace mirror opposite the front side; removing material from the green mirror preform to form support ribs …

Super‐polished silicon carbide mirror for …

04.06.1998· We demonstrate the usefulness of a high‐quality SiC mirror for the high‐power operation of vacuum ultraviolet lasers. A void free SiC film of 400‐μm thickness was deposited onto a high‐purity graphite substrate by chemical vapor deposition. The super‐polished SiC mirror, whose surface roughness was 0.2 nm rms, was used as a cavity reflector of a high…

Ultra-lightweight C/SiC Mirrors and Structures

is still high. The manufacturing process The raw material used is a standard porous C/C rigid felt, which is made from short, randomly oriented (isotropic) carbon fibres Silicon-carbide (SiC) ceramic mirrors and structures are becoming increasingly important for lightweight opto-mechanical systems that must work in adverse environments.

Super-polished silicon carbide mirror for …

01.02.1990· We demonstrate the usefulness of a high-quality SiC mirror for the high-power operation of vacuum ultraviolet lasers. A void free SiC film of 400-μm thickness was deposited onto a high-purity graphite substrate by chemical vapor deposition. The super-polished SiC mirror, whose surface roughness was 0.2 nm rms, was used as a cavity reflector of a high …

Silicon Carbide (SiC): The Future of Power? …

01.11.2019· While many varieties and purities of silicon carbide exist, semiconductor-grade quality silicon carbide has only surfaced for utilization in the last few decades. How to Create Silicon Carbide The simplest silicon carbide manufacturing method involves melting silica sand and carbon, such as coal, at high temperatures―up to 2500 degrees Celsius.