Laser Beamsteering Mirrors

Technical Data

Material:

Figure:

Irregularity:

Scratch-dig:

Clear aperture:

Durability:

Sizes:

Thickness:

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Borofloat 33

λ / 10*

λ / 20*

20-10 (dielectric mirrors)

25-10 (metallic mirrors)

80% of diameter

MIL-M-13508-C

∅ 12.7 mm ∅ 25.4 mm ∅ 50.8 mm

5.0 mm 8.0 mm 12.5 mm

*after coating, λ = 633 nm

UV dielectric mirror

These mirrors are designed for use with moderately powered UV and blue light lasers such as argonion lasers. They have more than 98% reflectivity from 300 – 530 nm for any polarization with any angle of incidence from 0° to 45°

Wavelength: 

(R > 97%) 300 –320 nm

(R > 98%) 320 –420 nm

(R > 99%) 420 –530 nm

Damage threshold: 

500 kW/cm² (cw)

0.3 J/cm² (10-ns pulse)

Visible dielectric mirror

These mirrors are designed for use with most gas lasers and dye lasers. They have more than 99% reflectivity for most visible laser light of any polarization with any angle of incidence from 0° to 45°

Wavelength (R > 99%): 

450 –700 nm

Damage threshold: 

500 kW/cm² (cw)

1 J/cm² (10-ns pulse)

Near-IR dielectric mirror

These mirrors have more than 99% reflectivity for most near-IR lasers. A particularly useful feature is their relatively high reflectivity at 633 nm, offering compability with HeNe alignment lasers.

Wavelength (R > 99%): 

700 – 900 nm

Damage threshold:

500 kW/cm² (cw)

10 J/cm² (28-ns pulse)

Dielectric high-power Nd:YAG mirror

These mirrors are designed specificallly for use with highpower Nd:YAG laser. Suitable for use with almost all commercial lasers built today, they can withstand up to 5 J/ cm² at 1.06 µm in a 10-ns pulse. The reflectivity is greater than 99% from 0° to 45° at 1.06 µm for all polarizations. In addition, these dielectric mirrors have reflectivity of 40% for 633 nm light at angles of incidence up to 45°. This makes them especially convenient for a HeNe laser as an alignment tool. Dielectric Nd:YAG mirrors for 532 nm are also available.

Wavelength (R > 99%): 

1030 –1070 nm

AOI 0°– 45°, any pol.

Damage threshold: 

1 MW/cm² (cw)

5 J/cm² (10-ns pulse)

Silflex™ MK II – General-purpose silver-coated mirror

These mirrors can be used over a broad spectral range with better than 98% reflectivity from 450 nm to beyond 12 µm. Their proprietary silver-based coating makes them highly reflective from 0° to 45° and virtually insensitive to polarization. Protective dielectric coatings make them resistant to tarnish and oxidation. Plus they have minimal phase distortion, so they are useful for ultrafast-pulsed applications with Ti:Sapphire and other lasers.

Wavelength (R ≥ 98% avg): 

0.45 –12 µm, AOI 45°, r-pol.

Damage threshold: 

30 kW/cm² (cw)

0.5 J/cm² (10-ns pulse)