Journal
OPTICS LETTERS
Volume 43, Issue 9, Pages 2090-2093Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.43.002090
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Japan Society for the Promotion of Science (JSPS)
- Fonds de Recherche du Quebec-Nature et Technologies (FRQNT)
- JSPS Kakenhi [15J04444]
- ETS Research Chair on THz Optoelectronics
- Grants-in-Aid for Scientific Research [15J04444] Funding Source: KAKEN
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We report a new method to temporally and spatially manipulate the pulse front tilt (PFT) intensity profile of an ultrashort optical pulse using a commercial microelectromechanical system, also known as a digital micromirror device (DMD). For our demonstration, we show terahertz generation in a lithium niobate crystal using the PFT pumping scheme derived from a DMD chip. The adaptive functionality of the DMD could be a convenient alternative to the more conventional grating required to generate a laser beam with a PFT intensity profile that is typically used for efficient optical rectification in noncollinear phase-matching conditions. In contrast to a grating, PFT using DMD does not suffer from wavelength dispersion, and exhibits overlap properties between grating and a stair-step echelon mirror. (C) 2018 Optical Society of America
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