Flat Mirrors

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Reflective optical components that feature a flat surface and are commonly used to steer beams without introducing chromatic aberration and minimize dispersion.

Product	Wavelength Range	Reflectance	Substrate	Availability	Price (USD)
Round Mirror	500 - 532 nm (±20 fs²)	> 99.5% (±20 fs², 500 - 532 nm, Average)	UV Fused Silica	In stock	$ 81.25
Product Code Wavelength Range 500 - 532 nm (±20 fs²) Reflection Wavelength 500 - 532 nm Coating Dielectric Reflectance > 99.5% (±20 fs², 500 - 532 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 1' Substrate UV Fused Silica Surface Irregularity < λ/10 (633 nm, over 6 mm, Flatness) Surface Quality 20-10 scratch-dig Clear Aperture > 22.86 mm Shape Round Angle of Incidence 45° Perpendicularity ±5' Chamfer 0.1 - 0.3 mm (45°) Supplier Location Lithuania See product details More from Photonic Solutions
Round Mirror	532 nm (Front, Center Wavelength)	> 99.9% (45°, 532 nm) (s-pol) > 99.9% (45°, 532 nm) (p-pol)	UV Fused Silica	In stock	$ 475.45
Product Code Wavelength Range 532 nm (Front, Center Wavelength) Center Wavelength 532 nm (Front) Coating Reflective V-Coating (532 nm) Uncoated (Rear) Coating Method Ion Beam Sputtering (Front) Reflectance > 99.9% (45°, 532 nm) (s-pol) > 99.9% (45°, 532 nm) (p-pol) Transmittance > 99.9% (45°, 532 nm) (p-pol) > 99.9% (45°, 532 nm) (s-pol) Diameter 50 mm Dimensions Ø 50 mm Thickness 9.5 mm Parallelism < 5' Substrate UV Fused Silica Surface Irregularity λ/10 (546 nm, Flatness) Surface Quality 10-5 scratch-dig 5/3x0.040 (ISO-7) Shape Round Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Coating Features High Power, Narrowband Supplier Location Germany See product details More from LASEROPTIK
Flat Supermirror	1064 nm	< 0.15% (Rear) 99.999%	Synthetic Fused Silica	6 - 12 weeks	$ 1030.00
Product Code Wavelength Range 1064 nm Center Wavelength 1064 nm Coating Dielectric Reflectance < 0.15% (Rear) 99.999% Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6 mm Parallelism < 5'' Substrate Synthetic Fused Silica Surface Irregularity λ/10 (Flatness) Surface Quality 10-5 scratch-dig Clear Aperture 20.32 mm Shape Round Angle of Incidence 0° Weight 7 g Rear Surface <0.15% Supplier Location California, USA See product details More from OptoSigma
Round Mirror	450 - 8000 nm (Operating Wavelength) 450 - 8000 nm (Operating Range, Operating Wavelength)	-	N-BK7	Contact Supplier	$ 2539.80
Product Code Wavelength Range 450 - 8000 nm (Operating Wavelength) 450 - 8000 nm (Operating Range, Operating Wavelength) Center Wavelength 450 - 8000 nm Reflection Wavelength 450 - 2000 nm 2000 - 20000 nm Coating Protected Silver Dimensions 137 x 110.5 x 36 mm (5.39 x 4.35 x 1.42") Substrate N-BK7 Damage Threshold Pulsed 0.225 J/cm² (0.167 mm, 99 fs, 1 kHz, 800 nm) 1 J/cm² (1.01 mm, 10 ns, 10 Hz, 1064 nm) 3 J/cm² (1 mm, 10 ns, 10 Hz, 1064 nm) Weight 2.1 kg (4.6 lbs) Length Tolerance ±0.5 mm Length 3231 mm (Path) Input Beam Diameter 1 mm (at 1/e², Maximum) Operating Temperature -5 to 80 °C (Non-Condensing) Diameter of Collimated Beam 1 mm (Maximum, Input) Supplier Location New Jersey, USA See product details More from Thorlabs
Round Mirror	750 - 1100 nm	99%	BK7	4 - 5 days	$ 65.00
Product Code Wavelength Range 750 - 1100 nm Center Wavelength 750 - 1100 nm Coating Dielectric Reflectance 99% Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6 mm (Edge) Edge Thickness 6 mm Substrate BK7 Surface Irregularity λ/10 (633 nm, Flatness) λ/10 (633 nm, Coated Surface) Surface Quality 20-10 scratch-dig (S1) Clear Aperture 21.59 mm Shape Round Angle of Incidence 0 - 45° Diameter Tolerance +0/-0.12 mm Thickness Tolerance ±0.25 mm Damage Threshold Pulsed 1 J/cm² (8 ns, 1064 nm) Wedge < 3' Chamfer 0.3 mm (45°) Supplier Location Lithuania See product details More from EKSMA Optics
Round Mirror	1820 - 2050 nm	95% (0°, 1820 - 2050 nm, Front) < 0.3% (0°, 1820 - 2050 nm, Rear)	Infrasil	In stock	$ 241.04
Product Code Wavelength Range 1820 - 2050 nm Center Wavelength 1820 - 2050 nm Reflection Wavelength 1820 - 2050 nm Coating Partial Reflector (1820 - 2050 nm) BBAR (1820 - 2050 nm) (Rear) Reflectance 95% (0°, 1820 - 2050 nm, Front) < 0.3% (0°, 1820 - 2050 nm, Rear) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism 5' Substrate Infrasil Surface Irregularity λ/10 (546.1 nm, Rear) λ/10 (546.1 nm, Front) Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Shape Round Angle of Incidence 0° Diameter Tolerance +0.05/-0.05 mm Thickness Tolerance ±0.1 mm Applications Cavity Output Coupler Laser Type Ho:YAG, Tm:YAG Coating Features Broadband Split Ratio (R:T) 95:5 (1820 - 2050 nm) Chamfer 0.3 mm (Rear) 0.3 mm (Front) Chamfer Tolerance ±0.1 mm Supplier Location Germany See product details More from LAYERTEC
Round Mirror	730 - 870 nm	> 99.9% (730 - 870 nm)	UV Fused Silica	In stock	$ 121.63
Product Code Manufacturer Optoman Wavelength Range 730 - 870 nm Center Wavelength 730 - 870 nm Reflection Wavelength 730 - 870 nm Coating BBHR (730 - 870 nm) Uncoated (Rear) Coating Method Ion Beam Sputtering (Front) Reflectance > 99.9% (730 - 870 nm) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6.35 mm (0.25") Parallelism 10'' Substrate UV Fused Silica Surface Irregularity < λ/8 (14 mm, 633 nm, Flatness) Surface Quality 20-10 scratch-dig (S1) 80-50 scratch-dig (S2) Clear Aperture 22 mm (Minimum) Shape Round Angle of Incidence 0° Diameter Tolerance +0/-0.1 mm Thickness Tolerance ±0.1 mm Applications Ultrafast Laser Optics Laser Type Ti:Sa Coating Features Broadband Group Delay Dispersion 20 fs² (735 - 866 nm) Chamfer 0.1 - 0.4 mm (45°) Supplier Location Lithuania See product details More from OPTOSHOP
Round Mirror	700 - 1064 nm	98%	BK7, Soda-Lime Float Glass	In stock	$ 117.66
Product Code Wavelength Range 700 - 1064 nm Coating Dielectric Reflectance 98% Diameter 25 mm Dimensions Ø 25 mm Thickness 4 mm Parallelism < 30'' Substrate BK7, Soda-Lime Float Glass Surface Irregularity λ/4 (Flatness) Surface Quality < 40-20 scratch-dig Clear Aperture 22.5 mm Shape Round Diameter Tolerance +0/-0.2 mm Thickness Tolerance +0.1/-0.3 mm Width Tolerance ±0.1 mm Length Tolerance ±0.1 mm Supplier Location United Kingdom; Rhode Island, USA See product details More from Knight Optical
Round Mirror	630 - 660 nm (Front) 1030 - 1064 nm (Front)	> 90% (45°, 630 - 660 nm) > 99.8% (45°, 1030 - 1064 nm) > 90% (45°, 630 - 660 nm, Front)	UV Fused Silica	In stock	$ 215.61
Product Code Wavelength Range 630 - 660 nm (Front) 1030 - 1064 nm (Front) Center Wavelength 1030 - 1064 nm (Front) 630 - 660 nm (Front) Reflection Wavelength 630 - 660 nm 1030 - 1064 nm Coating BBHR (1030 - 1064 nm) BBHR (630 - 660 nm) Uncoated (Rear) Coating Method Electron Beam Evaporation (Front) Reflectance > 90% (45°, 630 - 660 nm) > 99.8% (45°, 1030 - 1064 nm) > 90% (45°, 630 - 660 nm, Front) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism < 5' Substrate UV Fused Silica Surface Irregularity λ/10 (546 nm, Flatness) Surface Quality 10-5 scratch-dig 5/3x0.025 (ISO-7) Shape Round Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Coating Features Broadband, Multi Wavelength Supplier Location Germany See product details More from LASEROPTIK
Round Mirror	355 - 445 nm	-	Fused Silica	In stock	$ 145.66
Product Code Wavelength Range 355 - 445 nm Reflection Wavelength 355 - 445 nm 370 - 425 nm Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.4 mm (0.25") Parallelism < 3' Substrate Fused Silica Surface Irregularity λ/10 (632.8 nm, Front, Flatness) Surface Quality 15-5 scratch-dig Clear Aperture > 10.16 mm Shape Round Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Thickness Tolerance ±0.2 mm Applications Ultrafast Laser Optics Coating Features Low GDD Group Delay Dispersion < 30 fs² (355 - 445 nm) < 30 fs² (370 - 425 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Round Mirror	1010 - 1050 nm	> 99.5% (1010 - 1050 nm, 5°, p-pol, Average)	Fused Silica	In stock	$ 990.00
Product Code Wavelength Range 1010 - 1050 nm Center Wavelength 1030 nm Coating Dielectric Reflectance > 99.5% (1010 - 1050 nm, 5°, p-pol, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6.35 mm (0.25") Substrate Fused Silica Surface Irregularity λ/10 (632.8 nm, PV) Clear Aperture 20.32 mm Shape Round Angle of Incidence 5° Diameter Tolerance +0/-0.05 mm Thickness Tolerance ±0.2 mm Applications Ultrafast Laser Optics Coating Features Highly-Dispersive Wedge 10' Group Delay Dispersion -1000 fs² (5°, 1010 - 1050 nm, p-pol) Supplier Location New Jersey, USA See product details More from Edmund Optics
Round Mirror	333 - 353 nm	99.8%	UV Fused Silica	4 - 5 days	$ 227.00
Product Code Wavelength Range 333 - 353 nm Center Wavelength 333 - 353 nm Coating Dielectric Reflectance 99.8% Diameter 50.8 mm (2") Dimensions Ø 50.8 mm (2") Thickness 8 mm (Edge) Edge Thickness 8 mm Substrate UV Fused Silica Surface Irregularity λ/10 (633 nm, Flatness) λ/10 (633 nm, Coated Surface) Surface Quality 20-10 scratch-dig (S1) Clear Aperture 43.18 mm Shape Round Angle of Incidence 0° Diameter Tolerance +0/-0.12 mm Thickness Tolerance ±0.25 mm Damage Threshold Pulsed 6 J/cm² (8 ns, 1064 nm) Laser Type Yb:KGW Wedge < 3' Chamfer 0.3 mm (45°) Supplier Location Lithuania See product details More from EKSMA Optics
Round Mirror	660 - 920 nm	98% (0°, 660 - 920 nm, Front) < 0.35% (0°, 660 - 920 nm, Rear)	Fused Silica	Contact Supplier	$ 227.77
Product Code Wavelength Range 660 - 920 nm Center Wavelength 660 - 920 nm Reflection Wavelength 660 - 920 nm Coating Partial Reflector (660 - 920 nm) BBAR (660 - 920 nm) (Rear) Reflectance 98% (0°, 660 - 920 nm, Front) < 0.35% (0°, 660 - 920 nm, Rear) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Substrate Fused Silica Surface Irregularity λ/10 (546.1 nm, Rear) λ/10 (546.1 nm, Front) Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Shape Round Angle of Incidence 0° Diameter Tolerance +0.05/-0.05 mm Thickness Tolerance ±0.1 mm Applications Cavity Output Coupler Laser Type Ti:Sa Coating Features Broadband Split Ratio (R:T) 98:2 (660 - 920 nm) Wedge 30' Group Delay Dispersion 0 fs² (660 - 920 nm) Chamfer 1 mm (Rear) 0.4 mm (Front) Chamfer Tolerance ±0.1 mm Supplier Location Germany See product details More from LAYERTEC
Round Mirror	1280 - 1600 nm	> 99% (1280 - 1600 nm, Average)	Fused Silica	In stock	$ 128.29
Product Code Wavelength Range 1280 - 1600 nm Reflection Wavelength 1280 - 1600 nm Coating Dielectric Reflectance > 99% (1280 - 1600 nm, Average) Diameter 19 mm Dimensions Ø 19 mm Parallelism < 3' Substrate Fused Silica Surface Irregularity λ/10 (633 nm, Flatness) Surface Quality 10-5 scratch-dig Clear Aperture > 16.15 mm, > 17.1 mm Shape Round Diameter Tolerance +0/-0.1 mm Thickness Tolerance ±0.2 mm Damage Threshold Pulsed 2.5 J/cm² (0.181 mm, 10 ns, 10 Hz, 1542 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Round Mirror	1030 nm (Center Wavelength)	> 99.9% (1030 nm)	UV Fused Silica	In stock	$ 121.63
Product Code Manufacturer Optoman Wavelength Range 1030 nm (Center Wavelength) Center Wavelength 1030 nm Reflection Wavelength 1030 nm Coating Reflective V-Coating (1030 nm) Uncoated (Rear) Coating Method Ion Beam Sputtering (Front) Reflectance > 99.9% (1030 nm) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism < 5' Substrate UV Fused Silica Surface Irregularity < λ/8 (633 nm, over 9 mm, Flatness) Surface Quality 10-5 scratch-dig (S1) Clear Aperture > 10.16 mm Shape Round Angle of Incidence 0 - 45° Diameter Tolerance +0/-0.1 mm Thickness Tolerance ±0.1 mm Damage Threshold Pulsed > 0.35 J/cm² (500 fs, 10 kHz, 45°, 1030 nm, p-pol) > 0.65 J/cm² (500 fs, 10 kHz, 45°, 1030 nm, s-pol) > 0.25 J/cm² (500 fs, 10 kHz, 0°, 1030 nm) Applications Ultrafast Laser Optics Laser Type Yb:KGW, Yb:KYW, Yb:YAG Coating Features Narrowband Group Delay Dispersion < 30 fs² (0 - 45°, 1030 nm) Chamfer 0.1 - 0.4 mm (45°) Supplier Location Lithuania See product details More from OPTOSHOP
Round Mirror	532 nm (Front, Center Wavelength)	> 99.8% (45°, 532 nm)	UV Fused Silica	In stock	$ 149.27
Product Code Wavelength Range 532 nm (Front, Center Wavelength) Center Wavelength 532 nm (Front) Reflection Wavelength 532 nm Coating Reflective V-Coating (532 nm) Uncoated (Rear) Coating Method Electron Beam Evaporation (Front) Reflectance > 99.8% (45°, 532 nm) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism < 5' Substrate UV Fused Silica Surface Irregularity λ/10 (546 nm, Flatness) Surface Quality 10-5 scratch-dig 5/3x0.025 (ISO-7) Shape Round Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Coating Features High Power, Narrowband Supplier Location Germany See product details More from LASEROPTIK
Round Mirror	532 nm	> 99.5%	-	6 - 12 weeks	$ 337.00
Product Code Wavelength Range 532 nm Center Wavelength 532 nm Reflectance > 99.5% Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Shape Round Weight 120 g Supplier Location California, USA See product details More from OptoSigma
Round Mirror	351 - 358 nm	> 99.8% (355 nm, Absolute)	Fused Silica	In stock	$ 147.00
Product Code Wavelength Range 351 - 358 nm Center Wavelength 355 nm Coating Dielectric Reflectance > 99.8% (355 nm, Absolute) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism < 3' Substrate Fused Silica Surface Irregularity λ/10 (PV, Flatness) Surface Quality 10-5 scratch-dig Clear Aperture 11.43 mm Shape Round Angle of Incidence 0 - 45° Diameter Tolerance +0/-0.1 mm Thickness Tolerance ±0.2 mm Damage Threshold Pulsed 5 J/cm² (20 ns, 20 Hz, 355 nm) Laser Type Nd:YAG Supplier Location New Jersey, USA See product details More from Edmund Optics
Round Mirror	420 - 680 nm	> 98% (420 - 680 nm, 45°, Average)	Borosilicate	12 weeks	$ 39.00
Product Code Wavelength Range 420 - 680 nm Center Wavelength 420 - 680 nm Coating Uncoated Reflectance > 98% (420 - 680 nm, 45°, Average) Diameter 25 mm Dimensions Ø 25 mm Thickness 1.1 mm Substrate Borosilicate Shape Round Angle of Incidence 0 - 45° Center Thickness 1.1 mm Supplier Location Pennsylvania, USA See product details More from Excelitas
Round Mirror	800 nm	> 99.95% (800 nm)	UV Fused Silica	In stock	$ 78.00
Product Code Wavelength Range 800 nm Reflection Wavelength 800 nm Coating Dielectric Reflectance > 99.95% (800 nm) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 1' Substrate UV Fused Silica Surface Irregularity < λ/10 (633 nm, over 6 mm, Flatness) Surface Quality 20-10 scratch-dig Clear Aperture > 22.86 mm Shape Round Angle of Incidence 0° Perpendicularity ±5' Chamfer 0.1 - 0.3 mm (45°) Supplier Location Lithuania See product details More from Photonic Solutions