Adaptive spatiotemporal optical pulse front tilt using a digital micromirror device and its terahertz application.
Opt Lett
; 43(9): 2090-2093, 2018 May 01.
Article
em En
| MEDLINE
| ID: mdl-29714753
ABSTRACT
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.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2018
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Article