Broadband IR Laser Output Coupler offers stable performance.

Press Release Summary:

Delivering consistent operation in LWIR wavelength band, Broadband IR Laser Output Coupler uses all-dielectric approach that reduces absorption in thin film design and stabilizes thermal effects as well as overall laser system design. Design addresses 7-11 µm wavelength band, providing stable reflectivity of 90% ±2%, and can be custom-sized and designed directly from specifications/drawings. Filter operation lends to optimized performance at, or near, normal angle of incidence.

Original Press Release:

Reynard Corporation Announces a Stable Broadband IR Laser Output Coupler Stable Operation in the LWIR Wavelength Band

San Clemente, CA - Reynard Corporation, a leading global supplier of optical components and custom thin film coatings announce a broadband IR laser output coupler.

Output couplers are partial reflecting mirrors positioned on one end of a laser cavity, typically reflecting 90% and transmitting 10% of incident radiation for the long wave IR (8-11µm) spectral band.

High performance is achieved for single wavelength lasers where optical coatings are designed for very narrow band operation. As technological advancements have allowed for broadband tunable lasers, performance of the output coupler has degraded, especially in the infrared. Traditional coating materials and designs exhibit up to 10% variation in reflectivity in the 7 to 10.6µm spectral region. Such variations reduce performance and stability of laser output, making them unsuitable for broadband infrared tunable applications. Reynard Corporation has developed an all-dielectric output coupler design for the 7-11µm wavelength band that provides stable reflectivity of 90%+/-2%.

An all-dielectric approach reduces absorption in the thin film design, which stabilizes thermal effects and can stabilize the overall laser system design. Operation of the filter shows excellent performance at, or near, a normal angle of incidence. Reynard has the fabrication, thin film coating, and measurement capabilities all in-house to deliver a custom-sized and designed filter directly from specifications or drawings. Modifications to the design have shown theoretical equivalent performance in the MWIR (3 to 5µm) spectral range.

1. Tunable wavelength laser output from 7-11µm
2. All-dielectric coating material set
3. Stable 90% ±2%reflectivity at near-normal incidence

"Reynard's experience in working with advanced material sets has once again demonstrated a leap in innovation by developing a thin film laser output coupler design that enhances the performance of LWIR tunable lasers that can open the path to new and novel applications," says Forrest Reynard, President of Reynard Corporation.

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, or for a free optical reference and product catalog, or visit our webpage for online ordering and reference at

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Reynard Corporation
1020 Calle Sombra,
San Clemente, CA, 92673 USA
Phone (949) 366.8866

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