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Ultra-Low Loss SuperMirrors™

Ultra-Low Loss SuperMirrors™

Product catalog summary

Technical Reference and Fundamental Applications

This document serves as a guide for selecting various optical components, including spherical lenses, cylindrical and specialty lenses, optics sets, optical systems, mirrors, and prisms. It highlights the advanced features of Ultra-Low Loss SuperMirrors™.

Ultra-Low Loss SuperMirrors™

These mirrors are designed using superpolishing and ion-beam coating technology to achieve the highest reflectivity and lowest losses over a spectral range of 583-1659 nm. They are particularly effective in etalons or optical cavities, providing finesse levels exceeding 30,000, which is significantly higher than standard mirrors.

Specifications

Material: UV grade fused silica
Surface Figure: Flat ≤λ/10, Concave ≤λ/8 at 632.8 nm
Surface Roughness: Super polished to <1 Å rms
Coating: High Finesse (R >99.97%), High Transmission (R >99.94%)
Angle of Incidence: 0°
Durability: MIL-C-675C standards
Damage Threshold: 1000 W/cm² CW, 0.5 J/cm² with 10 nsec pulses

Ordering Information

The document provides a detailed table for ordering SuperMirrors, specifying wavelength ranges, center wavelengths, diameters, and model numbers for both flat and concave mirrors, available in high finesse and high transmission variants.

Cleaning Recommendations

Only dust removal with a low-pressure filtered dry nitrogen nozzle is recommended. Specialized cleaning techniques for high-performance optics should be employed by qualified personnel to maintain performance levels.

Catalog excerpts

O p t i c s 529 Email: [email protected] • Web: newport.com TECHNICAL REFERENCE AND FUNDAMENTAL APPLICATIONS LENS SELECTION GUIDE SPHERICAL LENSES CYLINDRICAL AND SPECIALTY LENSES OPTICS SETS OPTICAL SYSTEMS MIRRORS PRISMS ULTIMA® Gimbal Optical Mounts see page 655 Ultra-Low Loss SuperMirrorsTM Our flat or concave SuperMirrors™ take advantage of our advanced superpolishing and ion-beam coating technology to provide the highest reflectivity and lowest losses of any commercially available mirrors over the spectral range of 583-1659 nm. When used in etalons or optical cavities, these mirrors typically provide finesse levels in excess of 30,000 — approximately 30 times better than mirrors manufactured by standard techniques. To convert reflectivity (R) and transmission (T) to finesse (F) and efficiency (ç), with absorption (A): • Highest reflectivity and lowest losses of any commercially available mirrors • R >99.97% typical for high finesse mirrors • Optical loss <100 ppm • Superpolished to <1 Å rms microroughness Specifications Material UV grade fused silica Surface Figure, S1 Flat: ë/10 at 632.8 nm over central 80% clear aperture Concave: ë/8 irregularity at 632.8 nm over central 80% clear aperture Surface Roughness, S1 Super polished to <1 Å rms microroughness over central 50% of diameter Surface Quality, S1 0-0 scratch-dig inside central 12.7 mm diameter 20-10 scratch-dig outside central 12.7 mm diameter Coating, S1 SR.xxF High Finesse: Finesse F >10,000 (R >99.97%), Efficiency ç >10% (T <0.03%) over the wavelength range SR.xxT High Transmission: Finesse F >5,000 (R >99.94%), Efficiency ç >50% (T <0.06%) over the wavelength range Angle of Incidence 0° S2 Surface ë/10 at 632.8 nm over central 80% clear aperture Surface Quality, S2 20-10 scratch-dig Antireflection Coating, S2 Broadband, multilayer coating, Ravg <0.5% Diameter Tolerance +0/-0.1 mm Thickness Tolerance Flat: ±0.38 mm, Concave: ±0.13 mm Wedge 30 ±15 arc min (flat mirror only) Chamfers 0.50 ± 0.25 mm face width x 45° ±15° Durability MIL-C-675C, para 4.5.10 and 4.5.12 Damage Threshold 1000 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses, typical SuperMirrors may be subject to U.S. high technology export restrictions. F = - = + . . ð ç R R T 1 T A 2 20 40 60 80 Degrees 0 10–2 10–3 10–4 10–5 10–6 10–7 10–8 Bidirectional reflectance distribution function (BRDF) for typical coated SuperMirror (courtesy of TMA Technologies, Inc. Bozeman, MT). 0.50 0.25 0.00 -0.25 -0.50 131 262 393 523 652 Distance on Surface in Microns (20.2X) Surface Microroughness (nm) 0 Surface profile of typical superpolished substrate. Reflectance (%) 0.90 0.95 1.00 1.05 1.10 100.00 99.95 99.90 99.85 Normalized Wavelength Typical F Series T Series SuperMirror Reflectivity 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0 0.90 0.95 1.00 1.05 1.10 Transmission (%) Normalized Wavelength Typical SuperMirror Transmission F Series T Series

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530 O p t i c s Phone: 1-800-222-6440 • Fax: 1-949-253-1680 TECHNICAL REFERENCE AND FUNDAMENTAL APPLICATIONS CYLINDRICAL AND SPHERICAL LENSES LENS SELECTION GUIDE SPECIALTY LENSES PRISMS MIRRORS OPTICAL SYSTEMS OPTICS SETS Ordering Information Wavelength (nm) Center Wavelength (nm) ±3% Diameter (mm) Tc (mm) Model Flat Model Concave R=1.0 m ±3% High Finesse 583–663 620 25.4 6.35 10CM00SR.30F 10CV00SR.30F 761–867 810 25.4 6.35 10CM00SR.40F 10CV00SR.40F 996–1134 1060 25.4 6.35 10CM00SR.50F 10CV00SR.50F 1241–1412 1320 25.4 6.35 10CM00SR.60F 10CV00SR.60F 1457–1659 1550 25.4 6.35 10CM00SR.70F 10CV00SR.70F...

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