Open AccessA circuit design of laser pulse generator
Author(s) -
W Putchana,
Amarin Ratanavis,
Prathan Buranasiri
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1719/1/012088
Subject(s) - pulse width modulation , pulse generator , laser , signal (programming language) , pulse (music) , generator (circuit theory) , materials science , square wave , signal generator , optics , modulation (music) , voltage , optoelectronics , wavelength , diode , physics , electrical engineering , computer science , engineering , power (physics) , acoustics , quantum mechanics , programming language
In this research, a circuit design for square pulse generation was proposed by using microcontroller to generate pulse width modulation signal (PWM). The PWM signal, then, has generated the voltage for a laser diode of wavelength 650 nm. The frequency can be tuned approaching 0-5 MHz with the simplicity of the pulse width adjustment. The signals at the width of 130 x 10 −9 s, 400 x 10 −9 s, 600 x 10 −9 s, 850 x 10 −9 s, 1000 x 10 −9 s was examined to generate laser pulses. The heat in the pulse generator can be effectively controlled.