These optics, typically made from fused silica, are ideal for short pulse applications where minimising temporal dispersion is crucial, thanks to the availability of thin substrates.
For industrial applications utilising high-power ultra-short pulse lasers, where even minimal dispersion is unacceptable, reflective versions of DOEs can be produced with high LDT dielectric mirror coatings.
Reflective DOEs, from spiral phase plates to top-hat beam shapers, can be designed for any angle of incidence (AOI), providing the same precision and performance as transmissive DOEs without any temporal dispersion.
