By Topic

Fabrication of high voltage square pulse generators for electro‐optic Kerr relaxation studies

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Usha, R. ; Laser Laboratory, Department of Physics, Indian Institute of Technology, Madras‐600036, India ; PrasadaRao, T.A.

Your organization might have access to this article on the publisher's site. To check, click on this link: 

High voltage square pulse generators, with fall times of 1 μs and 45 ns have been fabricated for the measurement of electro‐optic Kerr relaxation studies in macromolecules. These have been fabricated with a pulse forming network in the Blumlein line configuration with discrete components. The switching is brought about by high voltage spark gaps, instead of the thyratrons and silicon controlled rectifiers (SCRs), which have voltage limitations. The performance of these pulse generators are found to be consistent and stable, without any change in the pulse shape even at very high voltages and repetition rates. The Kerr constants and relaxation times measured with these pulse generators for the liquid crystal p‐(methoxybenzelidene)‐p‐butylaniline (MBBA) at its nematic to isotropic phase transition temperature (43.5 °C) are found to be in very good agreement with the reported values obtained from the optical Kerr effect investigations using high power Q‐switched solid state lasers.

Published in:

Review of Scientific Instruments  (Volume:65 ,  Issue: 10 )