DICHROIC MIRRORS
Harmonic separators used to reflect one wavelength and to transmit the others. Reflectance is higher than 99.5% for the wavelength of interest and transmittance is at least 90% for the rejected wavelengths.
Laser Damage Threshold: >2J/cm2, 8 ns pulse, 1064 nm typical for BK7 substrates; >5J/cm2 8 ns pulse, 1064 nm typical for UVFS substrates
Back side antireflection coated: R<0.5%
Parallelism: 30 arcsec
Harmonic separators are dichroic beamsplitters used to reflect one wavelength and to transmit the others. Reflectance of >99.5% for the wavelength of interest and transmittance of >90% for the rejected wavelengths. The rear surface of harmonic separators is antireflection coated.
Substrate
Material
UV grade fused silica or BK7 glass
S1 Surface Flatness
λ/10 typical at 633 nm
S1 Surface Quality
20-10 scratch & dig (MIL-PRF-13830B)
S2 Surface Flatness
λ/10 typical at 633 nm
S2 Surface Quality
20-10 scratch & dig (MIL-PRF-13830B)
Diameter Tolerance
+0.00 / -0.12 mm
Thickness Tolerance
±0.25 mm
Parallelism
30 arcsec
Chamfer
0.3 mm at 45° typical
Coating
Technology
Electron beam multilayer dielectric
Adhesion and Durability
Per MIL-C-675A. Insoluble in lab solvents
Clear Aperture
Exceeds central 85% of diameter
Laser damage threshold:
BK7
UV FS> 2 J/cm2, 8 ns pulse, 1064 nm
> 5 J/cm2, 8 ns pulse, 1064 nmCoated Surface Flatness
λ/10 at 633 nm over 85% of diameter available
Transmitted Wavefront Distortion (TWD)
λ/10 over clear aperture
Back side antireflection coated
R<0.5%
BK7
CODE
MATERIAL
DIAMETER
THICKNESS
AOI
REFLECTED WAVELENGTH
TRANSMITTED WAVELENGTH
041-6105
BK7
ø12,7 mm
3 mm
45°
R>99.5%@633nm
T>95%@1064nm
041-6605
BK7
ø12,7 mm
3 mm
45°
R>99.5%@1064nm
T>90%@633nm
042-6605
BK7
ø25,4 mm
6 mm
45°
R>99.5%@1064nm
T>90%@633nm
042-6105
BK7
ø25,4 mm
6 mm
45°
R>99.5%@633nm
T>95%@1064nm
031-6800
BK7
ø12,7 mm
3 mm
0°
R>99.5%@1064nm
T>95%@808nm
031-6805
BK7
ø12,7 mm
3 mm
45°
R>99.5%@1064nm
T>95%@808nm
032-6800
BK7
ø25,4 mm
6 mm
0°
R>99.5%@1064nm
T>95%@808nm
032-6805
BK7
ø25,4 mm
6 mm
45°
R>99.5%@1064nm
T>95%@808nm
UVFS
CODE
MATERIAL
DIAMETER
THICKNESS
AOI
REFLECTED WAVELENGTH
TRANSMITTED WAVELENGTH
041-6800
UVFS
ø12,7 mm
3 mm
0°
R>99.5%@1064nm
T>95%@808nm
041-6805
UVFS
ø12,7 mm
3 mm
45°
R>99.5%@1064nm
T>95%@808nm
042-6800
UVFS
ø25,4 mm
6 mm
0°
R>99.,5%@1064nm
T>95%@808nm
042-6805
UVFS
ø25,4 mm
6 mm
45°
R>99.5%@1064nm
T>95%@808nm
描述 [描述] Harmonic separators used to reflect one wavelength and to transmit the others.