Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] aeqh_v1_0.tar.gz(11448 Kbytes)|
|Manuscript Title: "Red Tweezers:" fast, customisable hologram generation for optical tweezers|
|Authors: Richard W. Bowman, Graham M. Gibson, Anna Linnenberger, David B. Phillips, James A. Grieve, David M. Carberry, Steven Serati, Mervyn J. Miles, Miles J. Padgett|
|Program title: Red Tweezers|
|Catalogue identifier: AEQH_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 185(2014)268|
|Programming language: LabVIEW 2010, C++, OpenGL Shader Language.|
|Computer: Intel-based personal computer, nVidia or AMD graphics card supporting OpenGL 2.4.|
|Operating system: Microsoft Windows XP or later.|
|Has the code been vectorised or parallelized?: Designed for GPUs|
|RAM: 2 Gb (highly dependent on video camera)|
|Keywords: Optical Tweezers, Hologram, OpenGL, GPGPU, Spatial Light Modulator, LabVIEW, Microscopy.|
|PACS: 87.80.Cc, 42.40.Jv.|
External routines: OpenGL, National Instruments Vision Development Module
Nature of problem:
This program controls a holographic optical tweezers instrument, including GPU-accelerated rendering of holograms, monitoring the video feed and presenting a user-friendly interface to manipulate particles.
An extendable LabVIEW user interface, including a plugin architecture, is implemented to provide user-friendly control. The program also contains a component that accelerates the necessary digital holography step by rendering patterns using OpenGL shaders.
The rendering engine is single-pass, i.e. iterative Fourier transform algorithms are not accelerated on the graphics card.
The rendering engine is a separately-compiled executable controlled via UDP and can be used for other purposes. It allows simple OpenGL shaders to be used to render functions, without writing boilerplate code.
This instrument control program is intended to run for as long as the experiment requires, over days if required. It can be re-started without losing most of its state information.
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