Open AccessCoherent combination of ultrashort pulse beams using two diffractive optics
Author(s) -
Tong Zhou,
Tyler Sano,
Russell Wilcox
Publication year - 2017
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.42.004422
Subject(s) - optics , femtosecond pulse shaping , ultrashort pulse , tilt (camera) , femtosecond , physics , pulse (music) , pulse shaping , beam (structure) , multiphoton intrapulse interference phase scan , diffraction , laser , mechanical engineering , detector , engineering
A novel coherent beam combiner, capable of combining large numbers of femtosecond pulse beams using two diffractive optics, is presented. The diffractive optic pair cancels pulse front tilt, while uncorrected dispersions are minimized. An example using four beams is modeled numerically and tested experimentally, demonstrating 120 fs pulses combined without degradation of pulse width. Scaling the concept, we show analytically that combining loss due to uncorrected dispersions is only a few percent for ∼200 beams with 130 fs pulses.