Research and Industrial Optics
ENG   RUS
 
Terms and conditions of sale
Request form
Optics stock
Products
Materials and coatings
 

New products  

THz Broad-band Phase Transformers

are manufactured upon request!
Go to...
 
       

High-reflection (HR) Dielectric Mirror Coatings

Download Coating Datasheet (PDF, 215 KB)

HR mirror coatings consist of layers of dielectric materials (i.e. not metals, which are used in mirrors for consumer goods) and are designed to achieve the highest possible reflectance, usually at specific wavelengths. Although engineered for best performance at normal (0) or 45 degrees angles-of-incidence, these coatings can be tailored for most any angle.

1. Laser line HR coating

This type of multilayer dielectric coating is often employed in laser applications where low scattering is important. Typical reflectivity value for S-polarization is greater than 99.5% and P-polarization greater than 99%.

Wavelength, nm
Reflection, %
AOI, deg
Polarization
Damage threshold,
J/cm2, 10 ns pulse
248
>=99.5
0, 45
S
2
>=99.0
45
P, UNP(unpolarized)
266
>=99.5
0, 45
S
2
>=99.0
45
P, UNP
308
>=99.5
0, 45
S
2
>=99.0
45
P, UNP
337
>=99.5
0, 45
S
2.5
>=99.0
45
P, UNP
355
>=99.5
0, 45
S
2.5
>=99.0
45
P, UNP
532
>=99.5
0, 45
S
3.5
>=99.0
45
P, UNP
633
>=99.5
0, 45
S
4
>=99.0
45
P, UNP
1064
>=99.5
0, 45
S
5
>=99.0
45
P, UNP
1550
>=99.5
0, 45
S
3
>=99.0
45
P, UNP
2100
>=99.0
0, 45
S
2.5
>=98.5
45
P, UNP
10600
>99.0
0
S, P, UNP
>1 kW/cm2, CW mode

HR coating at 248 nm for S- and P-polarization, 45°
Fig. 1-1 HR coating at 248 nm for S- and P-polarization, AOI=45°.

HR coating at 1064 nm for S- and P-polarization, 45°
Fig. 1-2 HR coating at 1064 nm for S- and P-polarization, AOI=45°.

2. Dual-wavelength HR coating

TYDEX has achieved considerable success in making dual-wavelength high-reflectors. Because YAG laser technology is very advanced in Russia, we are able to deliver very impressive YAG (and related) optics. TYDEX' dual-band mirrors for 1064 nm and 532 nm have proven to be just as good as those produced at the top US and European companies, at considerably lower cost. This impressive performance is achieved using highly resourceful Tydex' coating engineers who have pushed e-beam technology to its limits.

Wavelength, nm
R, %
AOI, deg
Polarization
Damage threshold,
J/cm2, 10 ns pulse
355 and 532
>=99.0 and >=99.5 respectively
0
any
3
532 and 1064
>=99.5 at each wavelength
0
any
4

Reflection vs. wavelength for  HR coating R>99% at 335 nm and R>99.5 at 532 nm,  AOI=0 deg
Fig. 2-1 Reflection vs. wavelength for HR coating R>99% at 335 nm and R>99.5 at 532 nm, AOI=0°.

Reflection vs.  wavelength for HR (R>99.5%) coating at 532 nm and 1064 nm, AOI=0 deg
Fig. 2-2 Reflection vs. wavelength for HR (R>99.5%) coating at 532 nm and 1064 nm, AOI=0°.

3. Broadband HR coating

Although broadband HR coatings can be metallic or dielectric, the dielectric versions are specified here. See section VI for metallic coatings.

Wavelength range, nm
Reflection per surface, %
AOI, deg
Damage threshold,
J/cm2, 10 ns pulse
260-340
>=99.0
0
2
350-450
>=99.0
0
2
700-900
>=99.0
0
4
900-1100
>=99.0
0
4

HR coating at 700-900 nm, 0°
Fig. 3-1 HR coating at 260-340 nm, AOI=0°.

HR coating at 700-900 nm, 0°
Fig. 3-2 HR coating at 720-900 nm, AOI=0°.

 

    
    Back to top    
   
© Tydex, 1994-2014
   
SPIE Member
EOS Member
Laser Association Member
SPBCCI Member