Increase of an Output Optical Signal of an Acousto-Optic Monochromator upon Frequency Modulation of a Control Signal
| Autor: | L. I. Mazur, M. M. Mazur, V. N. Shorin, Yu. A. Suddenok |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Physics business.industry Bandwidth (signal processing) Physics::Optics Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Optics Angular aperture law 0103 physical sciences Control signal Chirp Photonics business Frequency modulation Monochromator |
| Zdroj: | Optics and Spectroscopy. 125:594-598 |
| ISSN: | 1562-6911 0030-400X |
| DOI: | 10.1134/s0030400x18100156 |
| Popis: | An angular aperture of an acousto-optical filter upon a linear frequency-modulated (chirp) control signal has been experimentally studied for the first time. The results of studying the spectral and angular dependences of the spectral transmission function of a filter upon a frequency modulation have shown the possibility of an efficient increase of the output optical signal. The value of the optical signal was increased by 2000 times using the selected design of the acousto-optical filter. This makes it possible to obtain a gain in the measurement time or in the value of the detected optical signal. Such an increase of the output signal upon a chirp control signal is provided by the increase of the angular aperture and broadening of the spectral transmission bandwidth together with the required proportional increase of the control signal power. |
| Databáze: | OpenAIRE |
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