Self-mixing interferometry for distance measurement using a semiconductor laser with current-modulated wavelength
| Autor: | E. I. Astakhov, D. A. Usanov, A. V. Skripal, S. Yu. Dobdin, I. S. Kostuchenko |
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| Rok vydání: | 2018 |
| Předmět: |
wavelength modulation
02 engineering and technology Sawtooth wave 01 natural sciences law.invention 010309 optics 020210 optoelectronics & photonics Optics Interference (communication) law 0103 physical sciences lcsh:Information theory 0202 electrical engineering electronic engineering information engineering lcsh:QC350-467 Electrical and Electronic Engineering semiconductor laser Physics Laser diode business.industry Spectral component Laser lcsh:Q350-390 Atomic and Molecular Physics and Optics Computer Science Applications self-mixing interferometry Self-mixing interferometry Modulation Harmonic distance measurement business lcsh:Optics. Light |
| Zdroj: | Компьютерная оптика, Vol 42, Iss 1, Pp 54-59 (2018) |
| ISSN: | 2412-6179 0134-2452 |
| DOI: | 10.18287/2412-6179-2018-42-1-54-59 |
| Popis: | The capabilities of the method of current-modulated laser wavelength are shown to be extended by using harmonic modulation. Advantages of the sawtooth modulation method associated with using the frequency measurements of the interference signal as an information parameter have been researched. Advantages of the harmonic-type modulation based on the use of measurement results for spectral component amplitudes of the interference signal for distance determination have also been investigated. A comparative analysis of methods for absolute distance measurements at the existing capabilities of semiconductor laser wavelength modulation has demonstrated the benefits of the harmonic modulation of laser diode current for distances under 30 cm, showing the sawtooth current modulation to work better for distances greater than 50 cm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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