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Sapphire Windows/Rods

Sapphire Windows/Rods

Sapphire is aluminium oxide (Al2O3) single crystal and one of the hardest materials. With its good transmission in the visible and near infrared, high chemical resistance and thermal stability, it is often used as optical windows in a harsh environment. Recently, sapphire windows/rods found a wide use for broadband continuum generation (white light generation) pumped by femtosecond lasers.

Newlight Photonics supplies c-cut (-C) high quality sapphire windows/rods with the minimized birefringence for continuum generation. Sapphire windows/rods cut along R-axis (-R) or along a random orientation (-RM) are also available.

Application examples:

WB01158_1.GIF (255 bytes) White light from 3 mm sapphire disk to seed NOPA for sub-20 fs visible
  pulses @ 100 kHz
WB01158_1.GIF (255 bytes) Investigation of femtosecond white light generation from sapphire

orientation
material
aperture
Product Compare (0)
Model Name orientation material aperture Price Availability Action
SAP1005-C Sapphire crystal window, Dia. 25.4x0.5mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$139.00
SAP1010-C Sapphire crystal window, Dia. 25.4x1.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$149.00 2-3 Days
SAP1020-C Sapphire crystal window, Dia. 25.4x2.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$149.00
SAP1030-C Sapphire crystal window, Dia. 25.4x3.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$169.00
SAP1040-C Sapphire crystal window, Dia. 25.4x4.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$199.00
SAP1080-C Sapphire crystal window, Dia. 25.4x8.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$319.00
SAP1120-C Sapphire crystal window, Dia. 25.4x12.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 1" USD$399.00
SAP1010-R Sapphire crystal window, Dia. 25.4x1.0mm, R-cut, both surfaces polished and uncoated R-cut Sapphire Dia 1" USD$149.00
SAP1030-R Sapphire crystal window, Dia. 25.4x3.0mm, R-cut, both surfaces polished and uncoated R-cut Sapphire Dia 1" Ask
SAP1010-RM Sapphire crystal window, Dia. 25.4x1.0mm, Random cut, both surfaces polished and uncoated Random-cut Sapphire Dia 1" USD$79.00 Out Of Stock
SAP1020-RM Sapphire crystal window, Dia. 25.4x2.0mm, Random cut, both surfaces polished and uncoated Random-cut Sapphire Dia 1" USD$99.00 Out Of Stock
SAP0254-C Sapphire crystal window, Dia. 12.7x25.4mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 0.5" USD$599.00
SAP2010-C Sapphire crystal window, Dia. 50.8x1.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 2" USD$299.00 2-3 Days
SAP2020-C Sapphire crystal window, Dia. 50.8x2.0mm, C-cut, both surfaces polished and uncoated c-cut Sapphire Dia 2" Ask Out Of Stock
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Basic Properties of Sapphire Crystals:
 

Transparency Range: 180 - 4500 nm

material-sa.GIF (11133 bytes)

Transmission Curve
Crystal Symmetry: Hexagonal
Density:  3.98 g/cm3
Lattice Constants: a=b=4.758 A, c=12.991 A
Thermo-Optic Coefficients:
dn/dT= 1.2 x 10-6 /oC
Optical Homogeneity: Δn < 10-6 /cm
Mohs Hardness:  9.0
Thermal Conductivity: 52  W/m/K
Thermal Expansion Coefficients: α = 8.4 x 10-6/K

Sellmeier Equations: (λ in µm) :
no2=1+ 1.43135λ2/(λ2 - 0.00528) + 0.65055λ2/(λ2- 0.01424)+ 5.34140λ2 /( λ2-325.01800 )  
ne2=1+ 1.50398λ2/(λ2 - 0.00548) + 0.55069λ2/(λ2-0.01480 )+ 6.59274λ2/( λ2-402.89500 )
Wavelength (nm) no ne Birefringence
(Δn=ne -no)		 Walk-off Angle
 at 45°
1064 1.7545 1.7467 -0.0275 0.257°
800 1.7602 1.7522 -0.0278 0.258°
632.8 1.7659 1.7579 -0.0283 0.261°
532 1.7717 1.7636 -0.0288 0.263°
355 1.7960 1.7873 -0.0310 0.276°
266 1.8331 1.8236 -0.0346 0.296°


Crystallographic orientations:

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Specifications of Sapphire Windows:
 

Orientation: c-cut (-C), R-cut (-R, 1-102 ), Random cut (-RM)
or as specified
Dimension Tolerance: ± 0.1 mm
Clear Aperture: > 85% central area
Flatness: <  λ/4 @ 633 nm for T >= 1 mm, <  λ @ 633 nm for T < 1 mm
Surface Quality: Scratch/Dig 40/20 per MIL-O-13830A
Parallelism: better than 1 arc minute
Perpendicularity: 3 arc minutes
Transmission Wavefront Distortion: < λ/4 @632.8 nm
Bevel: < 0.25 mm X 45°


Crystallographic orientations of sapphire crystal:

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