Optical Parametric Oscillators (OPO) also convert radiation of femtosecond lasers and allow tunable lasing in other wavelength ranges (see here). This conversion introduces more optical components into the total system and consequently more GDD that has to be managed. The diagrams demonstrate some examples of GDD optimized OPO coatings.
If not mentioned otherwise, all values and diagrams are given
... for the standard substrate material used in the described wavelength area (mostly Fused Silica or CaF2).
... without consideration of the rear surface.
... with EBE coating technique for a good cost-performance ratio.
Customized coatings are available for all types.
–––– dashed lines show the zoomed curve with the stated magnification
750-850 nm: Tp > 96%; 980-1620 nm: Rs,avg > 99.8%; 1750-4500 nm: Tp,avg > 80% (IBS-coating)
best effort (IBS-coating)
532 nm: R < 5%; 700-1000 nm: R > 99.9%; 1100-2100 nm: T > 90% (IBS-coating)
Every coating type can be optimized
• substrate material
• angle of incidence
• GDD value
Alternatively we can create
a totally new design for you.