Square Optical Windows are available as both Laser Quality and Analytical Quality polish designated as LQ (Laser Quality) and AQ (Analytical Quality). 

Square Optical Windows are available in UV Grade Fused Silica (FS) & BK7 Glass materials.  Square Optical Windows are flat polished optical windows typically used to isolate environments while allowing light to pass relatively unimpeded.   Square Optical Windows are generally used for cover plates to protect other components within an optical assembly, instrument or laser.  Square Optical Windows are also used as optical coating substrates. 

For more information about Optical Windows, refer to our Optics Tutorial page.
 

-- eSource Optics also offers an Excess Inventory of custom Thickness Optical Windows....

Please visit our "Windows Sale" Link.

 

OPTICAL WINDOW SPECIFICATIONS   Material: N-BK7 Glass & UV Grade Fused Silica (FS)      Size Tolerance: ± 0.25mm Thickness Tolerance: ± 0.25mm   Surface Figure:  LQ = L/4 - L/10 @ 633 nm nominal                              AQ = ~2 waves @ 633 nm nominal Surface Finish: LQ = 10-5 to 20-10 both surfaces                            AQ = 60-40 both surfaces Clear Aperture: central 85% Parallelism: LQ = < 5 arc minutes                      AQ = < 15 arc minutes  Chamfer: ~ 0.30mm @45 deg.   (LQ = Laser Quality / AQ = Analytical Quality)   (All dimensions in mm)

 

                                               

 

 

SIZE(S)  (mm)	THICKNESS(T)       (mm)	DESCRIPTION & QUALITY	MATERIAL	PRODUCT #	PRICE	ORDER
12.7	6.4	Laser Quality Square Optical Window	BK7	LQB1264SW	$175.00	LQB1264SW
12.7	6.4	Laser Quality Square Optical Window	Fused Silica	LQF1264SW	$195.00	LQF1264SW
25.4	1.6	Analytical Quality Square Optical Window	BK7	AQB2516SW	$85.00	AQB2516SW
25.4	1.6	Analytical Quality Square Optical Window	Fused Silica	AQF2516SW	$95.00	AQF2516SW
25.4	2.0	Laser Quality Square Optical Window	BK7	LQB2520SW	$225.00	LQB2520SW
25.4	2.0	Laser Quality Square Optical Window	Fused Silica	LQF2520SW	$295.00	LQF2520SW
25.4	6.4	Laser Quality Square Optical Window	BK7	LQB2564SW	$225.00	LQB2564SW
25.4	6.4	Analytical Quality Square Optical Window	BK7	AQB2564SW	$85.00	AQB2564SW
25.4	6.4	Laser Quality Square Optical Window	Fused Silica	LQF2564SW	$275.00	LQF2564SW
25.4	6.4	Analytical Quality Square Optical Window	Fused Silica	AQF2564SW	$100.00	AQF2564SW
38.1	9.5	Analytical Quality Square Optical Window	BK7	AQB3895SW	$105.00	AQB3895SW
50.8	1.6	Analytical Quality Square Optical Window	BK7	AQB5016SW	$110.00	AQB5016SW
50.8	1.6	Analytical Quality Square Optical Window	Fused Silica	AQF5016SW	$150.00	AQF5016SW
50.8	4.8	Analytical Quality Square Optical Window	BK7	AQB5048SW	$130.00	AQB5048SW
50.8	4.8	Analytical Quality Square Optical Window	Fused Silica	AQF5048SW	$170.00	AQF5048SW
50.8	6.4	Analytical Quality Square Optical Window	BK7	AQB5064SW	$135.00	AQB5064SW
50.8	6.4	Analytical Quality Square Optical Window	Fused Silica	AQF5064SW	$205.00	AQF5064SW
50.8	9.5	Analytical Quality Square Optical Window	BK7	AQB5095SW	$140.00	AQB5095SW
50.8	9.5	Laser Quality Square Optical Window	Fused Silica	LQF5095SW	$515.00	LQF5095SW
50.8	9.5	Analytical Quality Square  Optical Window	Fused Silica	AQF5095SW	$225.00	AQF5095SW
76.2	3.2	Analytical Quality Square Optical Window	Fused Silica	AQF7632SW	$245.00	AQF7632SW
76.2	6.4	Analytical Quality Square Optical Window	Fused Silica	AQF7664SW	$295.00	AQF7664SW
76.2	9.5	Analytical Quality Square Optical Window	BK7	AQB7695SW	$175.00	AQB7695SW
76.2	12.7	Analytical Quality Square Optical Window	BK7	AQB7613SW	$190.00	AQB7613SW
101.6	1.0	Analytical Quality Square Optical Window	BK7	AQB10110SW	$275.00	AQB10110SW
101.6	1.6	Analytical Quality Square Optical Window	BK7	AQB10116SW	$275.00	AQB10116SW
101.6	1.0	Analytical Quality Square Optical Window	Fused Silica	AQF10110SW	$325.00	AQF10110SW
101.6	1.6	Analytical Quality Square Optical Window	Fused Silica	AQF10116SW	$335.00	AQF10116SW
101.6	6.4	Analytical Quality Square Optical Window	Fused Silica	AQF10164SW	$395.00	AQF10164SW
101.6	9.5	Analytical Quality Square Optical Window	Fused Silica	AQF10195SW	$495.00	AQF10195SW
127.0	1.0	Analytical Quality Square Optical Window	Fused Silica	AQF12710SW	$445.00	AQF12710SW
127.0	3.2	Analytical Quality Square Optical Window	Fused Silica	AQF12732SW	$525.00	AQF12732SW
127.0	6.4	Analytical Quality Square Optical Window	Fused Silica	AQF12764SW	$595.00	AQF12764SW
127.0	9.5	Analytical Quality Square Optical Window	Fused Silica	AQF12795SW	$675.00	AQF12795SW
152.4	1.0	Analytical Quality Square Optical Window	Fused Silica	AQF15210SW	$500.00	AQF15210SW
152.4	3.2	Analytical Quality Square Optical Window	Fused Silica	AQF15232SW	$595.00	AQF15232SW
152.4	6.4	Analytical Quality Square Optical Window	Fused Silica	AQF15264SW	$795.00	AQF15264SW
152.4	9.5	Analytical Quality Square Optical Window	Fused Silica	AQF15295SW	$975.00	AQF15295SW

 

  

             · Other standard "AQ" Square Optical Window sizes and thicknesses up to 152.4mm

                  Square and 12.7mm Thick in both Fused Silica & BK7 are available by Request

 

 

              

                                                                              

                                                             BK7 Glass Refractive Index  

Wavelength, nm	365	405	546	706	850
Refractive Index (n)	1.536	1.530	1.519	1.513	1.509

 

 

 

 

 

 

 

 

                      

 

 

 

                                                             UV Grade Fused Silica Refractive Index  

Wavelength, nm	193	248	308	355	405
Refractive Index (n)	1.561	1.508	1.485	1.476	1.469

 

 

 

 

 

                  

                                       

 

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                (Materials transmittance can vary slightly and this data should be used as a reference only.  Based on 2-3mm Thick.)