Journal ArticleDOI
Demonstration of Pinhole Laser Beam Profiling Using a Digital Micromirror Device
Mumtaz Sheikh,Nabeel A. Riza +1 more
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TLDR
In this paper, a 2D laser beam profiling using a Texas Instruments visible band digital micromirror device (DMD) was demonstrated for the first time, to the best of the authors' knowledge.Abstract:
Demonstrated for the first time, to the best of the authors' knowledge, is two-dimensional (2-D) pinhole laser beam profiling using a Texas Instruments visible band digital micromirror device (DMD). Software controlled micromirror digital tilt positions across the DMD plane create a moving pinhole for sampling an arbitrary distribution laser beam power profile. A 532-nm 0.5-W laser coupled to an optically addressed nematic liquid crystal spatial light modulator is used to generate a laser beam black-and-white high-resolution test line pattern having a 62.5-mum linewidth. The test pattern is successfully profiled using a DMD formed 27.36 mum times 27.36 mum pinhole. Demonstrated for the first time is 2-D knife-edge DMD-based profiling of an ultraviolet 337-nm 4-ns pulsewidth 10-Hz pulsed laser beam.read more
Citations
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Journal ArticleDOI
Coherence measurement with digital micromirror device
TL;DR: This work measures the complex-valued spatial coherence function of a multimode broad-area laser diode using Young's classical double slit experiment realized with a digital micromirror device and constructs the coherent modes of the beam.
Journal ArticleDOI
Motion-free hybrid design laser beam propagation analyzer using a digital micromirror device and a variable focus liquid lens
Mumtaz Sheikh,Nabeel A. Riza +1 more
TL;DR: The first motion-free laser beam propagation analyzer with a hybrid design using a digital micromirror device (DMD) and a liquid electronically controlled variable focus lens (ECVFL) is proposed, promising better repeatability, speed, and reliability.
Journal ArticleDOI
Digital Micro-mirror Device-based broadband optical image sensor for robust imaging applications
TL;DR: In this paper, a robust broadband optical image sensor using a Digital Micro-mirror Device (DMD) is presented for the first time, which provides robustness to global light irradiance variations such as via environmental effects, e.g., moving clouds.
Journal ArticleDOI
Coded access optical sensor (CAOS) imager
TL;DR: This paper demonstrates the foundational working principles of the first experimental electronically programmable CAOS imager using hybrid time-frequency multiple access sampling of a known high contrast laser beam irradiance test map, with the CAOS instrument based on a Texas Instruments digital Micromirror Device.
Proceedings ArticleDOI
Power smart in-door optical wireless link applications
TL;DR: The design and applications of a power smart in-door optical wireless link suitable for use in situations where the link distance changes and lossless beam propagation between the Transmitter (T) and Receiver (R) using agile optics are presented.
References
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Journal ArticleDOI
Technique for Fast Measurement of Gaussian Laser Beam Parameters
Journal ArticleDOI
Micro-electro-mechanical system-based digitally controlled optical beam profiler.
TL;DR: An optical beam profiler is introduced that uses a two-dimensional (2-D) small-tilt micromirror device that includes a liquid-crystal-based 90 degrees polarization rotator sandwiched between crossed polarizers for the optical beam whose polarization direction is known.
Journal ArticleDOI
Optical power independent optical beam profiler
Nabeel A. Riza,M. Junaid Mughal +1 more
TL;DR: In this article, an optical power independent optical beam profiler was proposed and demonstrated for the first time using a pair of symmetrically located power detection photodetectors along with an electronically programmed two-dimensional digital micromirror device to implement spatial beam profiling.
Patent
Digital optical beam profiler
TL;DR: An agile optical beam profiler using a two-dimensional small tilt digital micromirror device/chip, a translation stage, and single photodetector or pair of photodeterors is presented in this paper.
Journal ArticleDOI
Surface plasmon polariton-based optical beam profiler.
TL;DR: A surface plasmon polariton- (SPP-) based device for measuring the intensity distribution of strongly focused light beams by scanning the thin film's edge through the focal region of a light beam.