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Laser-Mirrors for harmonic Wavelength Separation

Dichroic Mirrors for 2nd and 3rd harmonic Wavelengths

For separation of the 2nd or 3rd harmonic wavelength, Materion Balzers Optics provides dichroic mirrors where one wavelength is transmitted while the other one is reflected. Similar to beamsplitters, dichroic mirrors for harmonic separation are basically made for one laser fundamental wavelength. Typically, reflectance is > 99.5%, while transmittance is > 95%. Harmonic separation mirrors are available for 0° and 45° application. Standard dimensions are ½” and 1”. Other customized dimensions are available upon request.

Dichroic Mirrors for 2nd and 3rd harmonic Wavelengths

Benefits

Various laser lines available – see overview
Standard reflectance > 99.5% for s- or p-pol
Standard transmittance: > 95% for s- or p-pol
High laser damage threshold
Angle of incidence: 0° and 45°
Low losses and scattering as RMS < 2 Å
Excellent long-term stability

Applications

Ultra-short pulse laser systems
Laser material processing
Beam delivery systems

Applications Schematic

Technical Data

Transmittance > 95% for any polarization
(customized upon request)

Reflectance > 99.5% for any polarization

Angle of Incidence 0° or 45°

Flatness L/10

Surface Quality 10-5

Dimensions 12.7 (0/-0.1) mm x 6.35 (±0.1) mm
25.4 (0/-0.1) mm x 6.35 (±0.1) mm
(others upon request)

Substrate UV fused silica

Parallelism < 5 arcmin

Overview

T > 95% vs. R > 99.5%

Λ(nm) 390-410 780-820

Λ(nm) 500-530 1000-1070

Λ(nm) 520-540 1040-1080

Λ(nm) 260-275 520-540

Dichroic Laser Line Mirror for Harmonic Separation 1030 vs.515nm ; AOI 45°; s-pol

Dichroic Laser Line Mirror for Harmonic Separation 515nm vs.1030nm ; AOI 45°; s-pol

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