Abstract

The controlled modulation of an optical wavefront is required for aberration correction, digital phase conjugation, or patterned photostimulation. For most of these applications, it is desirable to control the wavefront modulation at the highest rates possible. The digital micromirror device (DMD) presents a cost-effective solution to achieve high-speed modulation and often exceeds the speed of the more conventional liquid crystal spatial light modulator but is inherently an amplitude modulator. Furthermore, spatial dispersion caused by DMD diffraction complicates its use with pulsed laser sources, such as those used in nonlinear microscopy. Here we introduce a DMD-based optical design that overcomes these limitations and achieves dispersion-free high-speed binary phase modulation. We show that this phase modulation can be used to switch through binary phase patterns at the rate of 20 kHz in two-photon excitation fluorescence applications.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
High-speed femtosecond laser beam shaping based on binary holography using a digital micromirror device

Jiyi Cheng, Chenglin Gu, Dapeng Zhang, and Shih-Chi Chen
Opt. Lett. 40(21) 4875-4878 (2015)

Superpixel-based spatial amplitude and phase modulation using a digital micromirror device

Sebastianus A. Goorden, Jacopo Bertolotti, and Allard P. Mosk
Opt. Express 22(15) 17999-18009 (2014)

Femtosecond laser pulse shaping at megahertz rate via a digital micromirror device

Chenglin Gu, Yina Chang, Dapeng Zhang, Jiyi Cheng, and Shih-Chi Chen
Opt. Lett. 40(17) 4018-4021 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Supplementary Material (1)

NameDescription
» Visualization 1       Movie of the two-photon excited fluorescence of the point scanned LWSS glider (Fig. 3(b), max. 12 points, point rate 20 kHz), exposure of each frame: 600 µs.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription