Indium Arsenide – A Simpler Solution!

Reynard Corporation, a leading global supplier of optical components and custom thin film coatings announces the addition of polished and coated indium arsenide (InAs) to its list of manufacturing capabilities.

InAs combines the refractive index profile of silicon with a short-wavelength blocking range broader than germanium.  Reynard Corporation routinely manufactures InAs windows with surface qualities approaching 10-5 per MIL-PRF-13830.  Substrates can be coated and verified to meet any customer spectral requirement from room temperature to 80K.  Coatings are routinely verified to pass the adhesion, humidity, and moderate abrasion requirements of MIL-C-48497A.

Key characteristics:
. Transmission edge is 3.1um at 80K (cryogenic)
. Transmission edge is 3.8um at 298K (room temperature)
. Refractive index is comparable to silicon in the 3-5 ?m and 8-12?m spectral bands
. Complete blocking below 3.0um due to natural material absorption

Applications:
. Cryogenic filters for remote sensing
. Laser limiter
. IR imaging, single band and multi band

The benefit of InAs is that it enables infrared optical system designers to explore the trade space between improved system performance and allowable manufacturing tolerances.  The extended blocking range offered by InAs enables the production of high performance, fully-blocked filters in the 3-5um and 8-12um spectral bands. In comparison to classical approaches, InAs based thin-film coatings require fewer layers to meet out-of-band blocking specifications while maintaining superior in-band transmission.

“Using InAs instead of the more commonly known IR materials can reduce optical component production costs which results in lower system costs with improved optical performance” says Forrest Reynard, President of Reynard Corporation.

Eliminating “dig” defects is of paramount importance for filters used above focal plane arrays (FPA’s) as such defects render blind any underlying pixels.  Samples manufactured by Reynard Corporation have been verified to approach 10-5 per MIL-PRF-13830.
About Reynard Corporation
Established in 1984, Reynard Corporation designs and manufactures precision thin film optical products for a global customer base, both military and commercial.  In-house operation capabilities include design, fabrication, photolithography, coating, and sub-assembly for a one-stop solution.  Contact our Sales Department for further information  (949)366-8866 , info@reynardcorp.com or for a free optical reference and product catalog, or visit our webpage for online ordering and reference at http://www.reynardcorp.com

Helica™ Fiber-Optic, Ultra-High Temperature Sensor to 1000 °C

A new addition to Chiral Photonics’ fiber-optic sensing line underscores its unique ability to address harsh conditions

Pine Brook, New Jersey – Chiral Photonics is proud to announce the newest addition to its Helica™ products – a robust fiber optic temperature sensor designed for the most demanding industrial and R&D applications that require stability to 1000 °C.

The sensor was designed for applications ranging from weld monitoring and control to turbine engine service and design. The sensing element is a monolithic glass fiber and is as stable as the silica glass. It is not reliant on any moving parts or coatings and the sensor packaging can be tailored to suit the application needs..

The Helica Temperature Sensor is based on Chiral Photonics’ patented chiral grating, which is fabricated by twisting, or microforming, the fiber as it is passed through a miniature heat zone to produce a distinct dip in the transmission spectrum. The spectral position of the dip in this chiral fiber changes with temperature allowing it to be used as a temperature sensor.

“Customers have been enthusiastic about this monolithic glass solution which does not rely on photoinduced gratings or coatings or moving parts, thereby offering the reliability inherent to glass,” states Dan Neugroschl, Chiral Photonics’ CEO.

Specifications:
- Temperature Range: Up to 1000°C
- Accuracy: 1%
- Sensitivity : 0.01 nm/°C (nominal)
- Probe (metal sheathing) Length: 300 mm standard – Other lengths available upon request
- Sensor/Grating Length: 15 mm – Other lengths available upon request
- Sensor Placement: 25 mm from probe tip – Other configurations available upon request
- Connector Type: FC/APC – Other connectors available upon request
For details please visit our website :  www.chiralphotonics.com/web/1000Ctempsensor.html

About Chiral Photonics, Inc.
Chiral Photonics, Inc. is the world-leading provider of in-fiber photonics. Chiral Photonics fulfills the photonic world’s demand for performance and ease of integration by uniting the unparalleled functionality of optical fiber with low-cost, high-volume manufacturing across a full array of sensor, filter and laser products.

Chiral Photonics is headquartered in Pine Brook, NJ. More information on Chiral Photonics can be found on the company’s web site: www.chiralphotonics.com.

Enviromental Gauges

San Clemente, CA – Reynard Corporation, a leading global supplier of optical components and custom thin film coatings announces thin film-based environmental gauges.

Thin film-based environmental gauges are manufactured by depositing environmentally susceptible coating materials onto an inert substrate.  Coating materials are typically deposited in a custom defined quasi-grid pattern of lines.  Redundant traces, matched in length and size, can be implemented to monitor environmental changes over a small region, such as for rising gas or fluid conditions, or to provide damage protection when used in abrasive conditions.  Unmatched lines allow for the variable open-space monitoring of increasing corrosion levels, or for the monitoring of different types of corrosive elements.  Grid configurations are designed for specific operational environments and can utilize a combination of matched and unmatched lines to achieve the required electrical characteristics.

The detection of environmental caused degradation is accomplished by monitoring the change in electrical characteristics from one side, or zone, of the environmental gauge to another.  Photolithography techniques are utilized to achieve repeatable, high-precision transmission characteristics in confined areas to meet your system requirements. “Environmental gauges are a unique way of monitoring corrosive environments” says Forrest Reynard, President of Reynard Corporation.
Materials such as Copper, Silver, Aluminum, Iron, and Zinc are commonly used for these lines, although other materials, or dopants, required for specific applications can also be deposited.  Traces can be added to most any substrate type, even to flexible substrates such as MelinexR.

Reynard Corporation’s thin film engineers will work closely with you to ensure product key characteristics are properly defined and the highest reliability product is delivered on-time to meet the demands of your custom application.

Key Characteristics:
. Custom grid line configurations
. Photolithography based precision and repeatability
. Materials to match your application

About Reynard Corporation
Established in 1984, Reynard Corporation designs and manufactures precision thin film optical products for a global customer base, both military and commercial.  In-house operation capabilities include design, fabrication, photolithography, coating, and sub-assembly for a one-stop solution.  Contact our Sales Department for further information  (949)366-8866 , info@reynardcorp.com or for a free optical reference and product catalog, or visit our webpage for online ordering and reference at http://www.reynardcorp.com