Standard fs laser optics
Standard Femtosecond Laser Optics (Bandwidth ∼120 nm)
- The coatings shown here are calculated for a bandwidth of 120 – 150 nm in the wavelength range between 600 nm and 1000 nm.
- Very high reflectivity of the mirrors (R > 99.9 ... 99.97 %)
- Spectral tolerance 1% of centre wavelength
- LIDT = 0.1 ... 0.3 J/cm2 depending on the coating design
- In-house design calculation and GDD measurement capabilities
- Centre wavelength, GDD and TOD according to customer specification
Standard Mirrors for Femtosecond Lasers
Figure 1: Reflectance (a) and GDD (b) spectra of a standard low dispersion turning mirror 
Figure 2: Reflectance (a) and GDD (b) spectra of a standard low dispersion femtosecond laser mirror 
Figure 3: Reflectance (a) and GDD (b) spectra of a standard low dispersion pump laser mirror Negative Dispersion Mirrors
Figure 4: Reflectance (a) and GDD (b) spectrum of a standard negative dispersion mirror with GDD = -40 ± 10 fs2Output Couplers and Beam Splitters
Figure 5: Reflectance (a) and GDD (b) spectra of several standard output couplers (the GDD spectra are calculated for R = 98%, but they are similar for all degrees of reflectivity) 
Figure 6: Reflectance (a) and GDD (b) spectra of several standard beam splitters for AOI = 45° and p - polarized light (the GDD spectra are calculated for R = 50%, but they are similar for all degrees of reflectivity) - Beam splitters for s - polarization are available as well
- Reflectance and transmittance of output couplers and beam splitters can be adjusted according to customer specifications
- Tolerances:
- R =10 … 70 % ± 2.5 %
- R = 70 … 90 % ± 1.5 %
- R = 90 … 95 % ± 0.75 %
- R = 95 … 98 % ± 0.5 %
- R > 98% ± 0.25 %
- Standars AR coatings:
- AOI = 0°: R < 0.2 %
- AOI = 45°, s - pol: R s < 0.5 %; p - pol: rear side uncoated, Rp < 0.6 %
DE / INT: 
