As ultrashort-pulse (USP) lasers—also called ultrafast lasers—become more common in industrial use, beam-shaping applications using diffractive optical elements (DOEs) become more challenging, especially as nanosecond pulsed USP lasers are replaced by even-faster femtosecond devices.
Our team at Holo/Or has studied the influence of USP lasers on DOE functionality and found that while effects on most beam-shaper DOEs are negligible, high-angle beamsplitters such as grating-based DOEs can see significant and undesirable chromatic effects.
To lean more about DOE and Ultrashort Pulses, read our article
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