Note: laser beam scanning using a ferroelectric liquid crystal spatial light modulator.
In this work we describe laser beam scanning using a ferroelectric liquid crystal spatial light modulator. Commercially available ferroelectric liquid crystal spatial light modulators are capable of displaying 85 colored images in 1 s using a time dithering technique. Each colored image, in fact, comprises 24 single bit (black and white) images displayed sequentially. We have used each single bit image to write a binary phase hologram. For a collimated laser beam incident on the hologram, one of the diffracted beams can be made to travel along a user defined direction. We have constructed a beam scanner employing the above arrangement and demonstrated its use to scan a single laser beam in a laser scanning optical sectioning microscope setup.
Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
Abhijit
A
Das
Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
Bosanta R
BR
Boruah