Enhanced control of excimer laser pulse timing using tunable additive noise

Robert Mingesz, Angela Barna, Z. Gingl, Janos Mellar

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Recently we have shown a system developed to precisely control the laser pulse timing of excimer lasers [R. Mingesz, Z. Gingl, G. Almasi, A. Csengeri and P. Makra, Utilising jitter noise in the precise synchronisation of laser pulses, Fluct. Noise Lett. 8 (2008) L41-L49]. The electronic circuit based on an embedded microcontroller and utilized the natural jitter noise of the laser pulse generation to improve the long term regulation of the delay of the laser related to an external trigger pulse. Based on our results we have developed an improved system that uses additional, programmable time delay units to tune the noise source to further enhance performance and allows reduction of complexity in the same time. A mixed-signal microcontroller generates a randomly dithered delay of the pulse generation moment to enhance the resolution and also runs a dedicated algorithm to optimize regulation. The compact, flexible hardware supports further enhancements; the signal processing algorithm can be replaced even by in-system reprogramming. Optimized processing and the relaxed hardware requirements may also support low-power operation, wireless communication, therefore the application possibilities may be extended to many other disciplines.

Original languageEnglish
Article number1240007
JournalFluctuation and Noise Letters
Volume11
Issue number1
DOIs
Publication statusPublished - Mar 2012

Fingerprint

Excimer Laser
Additive Noise
excimer lasers
Timing
time measurement
Laser
pulses
Microcontroller
Jitter
lasers
hardware
Hardware
vibration
wireless communication
Wireless Communication
Trigger
Signal Processing
signal processing
Time Delay
synchronism

Keywords

  • Active timing control
  • dithering
  • jitter noise
  • programmable delay

ASJC Scopus subject areas

  • Mathematics(all)
  • Physics and Astronomy(all)

Cite this

Enhanced control of excimer laser pulse timing using tunable additive noise. / Mingesz, Robert; Barna, Angela; Gingl, Z.; Mellar, Janos.

In: Fluctuation and Noise Letters, Vol. 11, No. 1, 1240007, 03.2012.

Research output: Contribution to journalArticle

Mingesz, Robert ; Barna, Angela ; Gingl, Z. ; Mellar, Janos. / Enhanced control of excimer laser pulse timing using tunable additive noise. In: Fluctuation and Noise Letters. 2012 ; Vol. 11, No. 1.
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