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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

Broadband Dielectric Stemmed Mirrors

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  • Stemmed Design Reduces Stress on Mirror Surface when Mounted by Stem
  • >99% Average Reflectivity Over Broad Wavelength Ranges
  • 20-10 Surface Quality and 0 - 45° Angle of Incidence
  • TECHSPEC® Laser and Metallic Coated Stemmed Mirrors Also Available

TECHSPEC® Broadband Dielectric Stemmed Mirrors provide low mounting stress and excellent reflectance on high performance, broadband dielectric coated mirrors. Designed to be mounted to TECHSPEC® Kinematic Circular Optical Mounts and E-Series Kinematic Optical Mirror Mounts, all contact between the mirror and the kinematic mount is through the stem, reducing the stress imparted on the optical surface of the mirror. Due to their stress-reducing design and monolithic fused silica construction, these mirrors provide excellent thermal stability and improved surfaced flatness compared to traditionally mounted λ/10 flat mirrors. Featuring greater than 99% reflectivity and 20-10 surface quality, these dielectrically stemmed mirrors perform significantly better than metal coated mirrors and increase system performance by minimizing energy loss and scatter. TECHSPEC® Broadband Dielectric Stemmed Mirrors are available at broad wavelength ranges, can be easily mounted and integrated into optical systems, and are ideal for high power beam steering applications from the UV to the near-infrared spectra.

Note: Contact us for custom options.

A comparison of the aberrations introduced to a λ/10 Stemmed Mirror and a λ/10 First Surface Mirror when mounted in a kinematic mount. As shown, a Stemmed Mirror stays within λ/10 specification up to 12 inoz of torque (“hand-tight”) while a First Surface Mirror becomes out of specification with a surface flatness of λ/5.
A comparison of the aberrations introduced to a λ/10 Stemmed Mirror and a λ/10 First Surface Mirror when mounted in a kinematic mount. As shown, a Stemmed Mirror stays within λ/10 specification up to 12 inoz of torque (“hand-tight”) while a First Surface Mirror becomes out of specification with a surface flatness of λ/5.
Stemmed Mirrors are mounted to kinematic mounts by a stem on their back surface, resulting in no contact with the edges of the mirror surface.
Stemmed Mirrors are mounted to kinematic mounts by a stem on their back surface, resulting in no contact with the edges of the mirror surface.