Open AccessChirped lasers dispersion spectroscopy implemented with an electro-optical intensity modulator – signal strength and shapes under different experimental conditions
Author(s) -
Michał Nikodem
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.008227
Subject(s) - optics , signal (programming language) , demodulation , dispersion (optics) , electro optic modulator , optical modulator , laser , materials science , generator (circuit theory) , intensity modulation , modulation (music) , spectroscopy , signal generator , spatial light modulator , voltage , physics , power (physics) , phase modulation , acoustics , computer science , telecommunications , phase noise , channel (broadcasting) , quantum mechanics , programming language
Signals measured with Chirped Laser Dispersion Spectroscopy (CLaDS) setup implemented with an intensity modulator are analyzed. We investigate the signal amplitude dependence on the modulator bias voltage and the signal generator output power. Potential strategies for signal retrieval are discussed. We demonstrate that choosing a bias voltage, an RF generator output power and a demodulation frequency is critical for CLaDS and strongly affects its performance.