Antireflection Coating (AR)
Antireflective (AR) coatings reduce surface reflection to increase transmission, improve image clarity and transmitted energy at the operating wavelength, and improve contrast by reducing scattered light in complex systems. Single-wavelength, dual-wavelength and broadband coatings are available. Dual-wavelength coatings suit widely separated wavelengths, such as visible alignment and near-infrared beams, or reference and tuning wavelengths. Uncoated BK7 reflects approximately 4% at each surface, transmitting only 92% of incident energy, making AR coatings especially important in systems with many elements.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Reflectance R_avg [Common Broadband Antireflection Coating；Coatingλ/4 MgF₂ @550 nm；λ=400–700 nm] | ≤1.70 % |
| Reflectance R_abs [Common Broadband Antireflection Coating; Coating Description UV-AR [250–450 nm]; λ=250–450 nm] | ≤1.0 % |
| Reflectance R_avg [Common Broadband Antireflection Coating; Coating Description UV-AR [250–450 nm]; λ=250–450 nm] | ≤0.75 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingUV-AR [250–450 nm]；λ=370–430 nm] | ≤0.5 % |
| Reflectance R_avg [Common broadband AR; Laser UV-VIS [250-532nm], UV-AR [250-700nm]; λ=250-532nm] | ≤1.25 % |
| Reflectance R_abs [Common broadband AR; Laser UV-VIS [250-532nm], UV-AR [250-700nm]; λ=350-450nm] | ≤1.0 % |
| Reflectance R_avg [Common broadband AR; Laser UV-VIS [250-532nm], UV-AR [250-700nm]; λ=250-700nm] | ≤1.5 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingVIS [400–700 nm]；λ=400–700 nm] | ≤0.5 % |
| Reflectance R_abs [Common Broadband Antireflection Coating；CoatingVIS-NIR [400–900 nm]；λ=880 nm] | ≤0.25 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingVIS-NIR [400–900 nm]；λ=400–870 nm] | ≤1.25 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingVIS-NIR [400–900 nm]；λ=880–900 nm] | ≤1.20 % |
| Reflectance R_avg [Common broadband AR; Laser VIS-NIR [500-1090nm]; λ=500-1090nm] | ≤1.0 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingVIS 0° [425–675 nm]；λ=425–675 nm] | ≤0.5 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingVIS 45° [425–675 nm]；λ=425–675 nm] | ≤0.75 % |
| Reflectance R_abs [Common Broadband Antireflection Coating；CoatingYAG-BBAR [500–1100 nm]；λ=532 nm] | ≤0.25 % |
| Reflectance R_abs [Common Broadband Antireflection Coating；CoatingYAG-BBAR [500–1100 nm]；λ=1064 nm] | ≤0.25 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingYAG-BBAR [500–1100 nm]；λ=500–1100 nm] | ≤1.0 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingNIR I [600–1050 nm]；λ=600–1050 nm] | ≤0.5 % |
| Reflectance R_abs [Common Broadband Antireflection Coating；CoatingNIR II [750–1550 nm]；λ=750–800 nm] | ≤1.5 % |
| Reflectance R_abs [Common Broadband Antireflection Coating；CoatingNIR II [750–1550 nm]；λ=800–1550 nm] | ≤1.0 % |
| Reflectance R_avg [Common Broadband Antireflection Coating；CoatingNIR II [750–1550 nm]；λ=750–1550 nm] | ≤0.7 % |
| Reflectance R_avg [Common broadband AR; Laser NIR [1000-1700nm]; λ=1000-1700nm] | ≤0.7 % |
| Reflectance R_avg [Common broadband AR; 2μm BBAR [1600-3000nm]; λ=1600-3000nm] | ≤0.6 % |
| Reflectance R_avg [Common broadband AR; 2μm BBAR [1600-3000nm]; λ=2000-2100nm] | ≤0.45 % |
| Main Wavelength [UV Single-Wavelength Antireflection Coating; Type VAR1] | 193 nm |
| Reflectance [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR1；λ=190–196 nm] | ≤0.3 % |
| Damage Threshold [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR1；λ=193 nm，pulse width 4 ns] | ≥300 mJ/cm² |
| Main Wavelength [UV Single-Wavelength Antireflection Coating; Type VAR2] | 248 nm |
| Reflectance [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR2；λ=243–253 nm] | ≤0.3 % |
| Damage Threshold [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR2；λ=248 nm，pulse width 10 ns] | ≥2 J/cm² |
| Main Wavelength [UV Single-Wavelength Antireflection Coating; Type VAR3] | 266 nm |
| Reflectance [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR3；λ=256–276 nm] | ≤0.25 % |
| Damage Threshold [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR3；λ=266 nm，pulse width 20 ns] | ≥3 J/cm² |
| Main Wavelength [UV Single-Wavelength Antireflection Coating; Type VAR4] | 343 nm |
| Reflectance [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR4；λ=333–353 nm] | ≤0.25 % |
| Damage Threshold [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR4；λ=343 nm，pulse width 20 ns] | ≥7.5 J/cm² |
| Main Wavelength [UV Single-Wavelength Antireflection Coating; Type VAR5] | 355 nm |
| Reflectance [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR5；λ=345–365 nm] | ≤0.25 % |
| Damage Threshold [Ultraviolet Single-Wavelength Antireflection Coating；Type VAR5；λ=355 nm，pulse width 20 ns] | ≥7.5 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR1] | 515 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR1; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR1；λ=515 nm，20 ns，20 Hz] | 10 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR2] | 532 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR2; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR2；λ=532 nm，20 ns，20 Hz] | 10 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR3] | 808 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR3; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR3；λ=808 nm，20 ns，20 Hz] | 10 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR4] | 980 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR4; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR4；λ=980 nm，20 ns，20 Hz] | 10 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR5] | 1030 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR5; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR5；λ=1030 nm，20 ns，20 Hz] | 15 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR6] | 1064 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR6; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR6；λ=1064 nm，20 ns，20 Hz] | 20 J/cm² |
| Main Wavelength [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR7] | 1550 nm |
| Reflectance R_abs [Visible–Near-Infrared Single-Wavelength Antireflection Coating; Type VAR7; DWL] | ≤0.25 % |
| Damage Threshold [Visible–Near-Infrared Single-Wavelength Antireflection Coating；Type VAR7；λ=1550 nm，20 ns，20 Hz] | 25 J/cm² |
| Wavelengths [Model DAR1; 0° AOI] | 373 /745 |
| Reflectance [Model DAR1; 0° AOI; λ=373 nm] | <0.25 % |
| Reflectance [Model DAR1; 0° AOI; λ=745 nm] | <0.5 % |
| Wavelengths [Model DAR2; 0° AOI] | 532 /1064 |
| Reflectance [Model DAR2; 0° AOI; λ=532 nm] | <0.25 % |
| Reflectance [Model DAR2; 0° AOI; λ=1064 nm] | <0.5 % |
| Wavelengths [Model DAR3; 0° AOI] | 808 /1064 |
| Reflectance [Model DAR3; 0° AOI; λ=808 nm] | <0.25 % |
| Reflectance [Model DAR3; 0° AOI; λ=1064 nm] | <0.5 % |
Datasheet
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