Title :
A novel technique for measuring the pulsewidth of nanosecond laser pulses
Author :
Tam, Siu-Chung ; Neo, Wah-Peng ; Chua, Hock-Chuan ; Ho, Anthony T S ; Lee, Sing
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
fDate :
8/1/1998 12:00:00 AM
Abstract :
This paper presents a simple, low-cost, and novel technique for measuring the temporal pulse shape of a nanosecond laser pulse accurately and consistently. The measurement configuration consists of a focusing lens, a tapered rod, and a digital noise filter. Using this setup, the pulsewidth of a nitrogen laser has been determined experimentally. Compared with an unaided measurement configuration, the new setup reduces the maximum deviation from 24.5% to 6.2% and the standard deviation from 7.6% to 1.4%, respectively
Keywords :
gas lasers; high-speed optical techniques; laser variables measurement; nitrogen; optical focusing; pulse measurement; N2; digital noise filter; focusing lens; laser stability; low-cost technique; nanosecond laser pulses; partial homogenization; pulsewidth measurement technique; tapered rod; temporal pulse shape; Digital filters; Laser noise; Lenses; Noise measurement; Noise shaping; Optical pulse shaping; Optical pulses; Pulse measurements; Shape measurement; Space vector pulse width modulation;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
