2010
DOI: 10.1364/ao.49.001838
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Experimental generation of Laguerre-Gaussian beam using digital micromirror device

Abstract: A digital micromirror device (DMD) modulates laser intensity through computer control of the device. We experimentally investigate the performance of the modulation property of a DMD and optimize the modulation procedure through image correction. Furthermore, Laguerre-Gaussian (LG) beams with different topological charges are generated by projecting a series of forklike gratings onto the DMD. We measure the field distribution with and without correction, the energy of LG beams with different topological charge… Show more

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Cited by 55 publications
(39 citation statements)
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“…Therefore, each mirror of DMD individually serves as a light switch, 31,32 and the DMD has numerous freedom to modulate the light field. With the amplitude DMD, several optical modes were successfully shaped, including the Laguerre-Gaussian, 33 Bessel modes, 34 flat-top modes, 35 and Ince-Gaussian modes. 26 The shaped modes are of high fidelity, and the DMD could facilitate the dynamic control.…”
Section: Methodsmentioning
confidence: 99%
“…Therefore, each mirror of DMD individually serves as a light switch, 31,32 and the DMD has numerous freedom to modulate the light field. With the amplitude DMD, several optical modes were successfully shaped, including the Laguerre-Gaussian, 33 Bessel modes, 34 flat-top modes, 35 and Ince-Gaussian modes. 26 The shaped modes are of high fidelity, and the DMD could facilitate the dynamic control.…”
Section: Methodsmentioning
confidence: 99%
“…Further, variations of DMDs are commercially available for a fraction of the cost of a phase-only SLM. Recently, a DMD was used to encode a varying phase structure onto a beam [89,90]. The amplitude shaping of spatial modes has been previously achieved by switching the micro-mirrors on and off rapidly [91].…”
Section: Generation Of Oam and Ang Modesmentioning
confidence: 99%
“…Many intensity profiles can be used in optical trapping experiments, such as Laguerre-Gaussian beam (Ren, Li, Huang, Wu, Gao, Wang & Li, 2010;Ren, Wu, Zhou, Fu, Sun, Wang & Li, 2010), radially polarized beam (Kozawa & Sato, 2010), etc. Here we consider the most commonly utilized single beam optical trap with Gaussian intensity profile…”
Section: Wwwintechopencommentioning
confidence: 99%