WATER-COOLED MIRRORS: LCuW water-cooled mirrors are designed to accept CW laser beams of 3KW/cm² with λ/20 thermal distortion at 10.6 micrometers.
The mirrors are comprised of a high efficiency heat exchanger in intimate contact with a very thin mirror faceplate. The heat exchanger controls laser induced thermal gradients in the mirror surface. The mirror will not become excessively distorted and introduce optical aberrations into the reflected laser beam. If high beam quality is to be produced in the laser cavity, and maintained in the far field, mirrors of this type must be used when the incident power density exceeds 200 watts/cm².
These mirrors are available with a hard gold coating to protect the surfaces from harsh chemical environments, and an alternate coating to retain >0.985 reflectance down to 0.5 micrometers.

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MOLYBDENUM MIRRORS: WHY MOLY MIRRORS? Moly mirrors have long been used with high power CO² gas dynamic lasers. Advanced polishing techniques are required to polish bare molybdenum metal to a reflectivity of 98% at 10.6µ. When this is accomplished the resulting mirror has superb physical properties. It is resistant to scratches and can be used in dirty environments. When dust particles settle on a moly mirror they do not tend to get burned-in or damage a superficial coating, as occurs with enhanced metal coatings. Moly mirrors also have low thermal distortion and the highest CO² CW laser damage threshold for any materials tested. ¹ As an option, SPAWR offers a broadband high reflectance coating allowing these mirrors to be used with a variety of wavelengths. A protective shipping/storage container is provided with each mirror.
¹ SPAWR Optical Research Inc. Tech Report, No. 74-004. "Metal Mirror Selection Guide".
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COPPER MIRRORS: High-energy lasers require the best mirrors available. Uncoated copper mirrors by SPAWR offer the highest quality and surface damage threshold available for medium and long waive IR lasers. Coatings on these mirrors are typically not required, however, they are available with a vacuum deposited protected silver coating or an electro chemically deposited hard gold coating.
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SUBSTRATE HOLDERS: SPAWR Industries, Inc. offers the optimum in low cost protective containers for optical grade mirrors. The "Plastic Substrate Holder" is a device used for storing, shipping and handling high quality optical mirrors. The mirror is securely mounted in a plastic container which prevents any mechanical contact of the polished mirror surface.

These containers are designed to hold 1", 1.5" and 2" diameter standard mirrors. Custom sizes on request.
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