Components for the Second Harmonic of the Ti:Sapphire Laser (300 – 600 nm)

Dual Wavelength Mirrors for AOI = 0°

The second harmonic of the Ti:Sapphire laser provides fs-pulses in the NUV and VIS spectral range. This aspect offers a variety of applications in spectroscopy and materials science. Optics for these special applications must be optimized for both high reflectance and low dispersion. Negative dispersion mirrors for pulse compression are of interest as well.

Special Features

High reflectance (R > 99.9 %)
Center wavelength and bandwidth according to customer specifications
Spectral tolerance ±1 %
Prototype production according to customer specifications
In-house design calculation and measurement capabilities

Fig.1:Reflectance and GDD spectra of a fs-optimized dual wavelength mirror for
400 nm + 800 nm at AOI = 0°

a)Reflectance vs. wavelength

b)GDD vs. wavelength (second harmonic)

c)GDD vs. wavelength (fundamental)

Dual Wavelength Turning Mirrors for AOI = 45°

Fig.2:Reflectance and GDD spectra of a fs-optimized dual wavelength turning mirror for 400 nm + 800 nm at AOI = 45°

a)Reflectance vs. wavelength

b)GDD vs. wavelength (second harmonic)

c)GDD vs. wavelength (fundamental)

Separators for the Second Harmonic from the Fundamental for AOI = 45°

Fig.3:Reflectance and GDD spectra of a separator HRs,p (45°, 400 nm) > 99.9 % + Rs,p (45°, 800 nm) < 2 %

a)Reflectance vs. wavelength

b)GDD vs. wavelength

Reflectance R > 99.9 % for s- and p-polarization in the reflectance band
Transmittance T > 95 % for s- and p-polarization in the transmittance band
These components work for p- and s- polarization, but performance can be optimized if the polarization is clearly specified

Fig.4:Reflectance and GDD spectra of a separator HRp (45°, 800 nm) > 99.9 % + Rp (45°, 400 nm) < 2 % + Rs (45°, 400 nm) < 10 %

a)Reflectance vs. wavelength

b)GDD vs. wavelength

Bandwidth of the 800 nm reflectance band > 200 nm for p-polarization
All separators exhibit |GDD| < 20 fs² in the transmittance band

Negative Dispersion Mirror Pair for the 400 nm Spectral Range at AOI = 0°

Fig.5:Reflectance and GDD spectra of a negative dispersion mirror pair for 350 – 480 nm with an average GDD varying from -30 fs² at 350 nm to 0 fs² at 480 nm (TOD optimized)

a)Reflectance vs. wavelength

b)GDD vs. wavelength

Components for the Second Harmonic of the Ti:Sapphire Laser (300 – 600 nm)

Dual Wavelength Mirrors for AOI = 0°

Special Features

Dual Wavelength Turning Mirrors for AOI = 45°

Separators for the Second Harmonic from the Fundamental for AOI = 45°

Negative Dispersion Mirror Pair for the 400 nm Spectral Range at AOI = 0°

Components for the Second Harmonic of the Ti:Sapphire Laser (300 – 600 nm)

Negative Dispersion Mirror Pair for the 400 nm Spectral Range at AOI = 0°