&lt;title&gt;Self-mixing interference inside a laser diode: application for displacement, velocity, and distance measurement&lt;/title&gt;

Bosch, Thierry; Servagent, Noël; Gouaux, Flore; Mourat, Gregory

doi:10.1117/12.312977

Cited by 15 publications

(11 citation statements)

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“…These characteristics are attractive for industrial applications. 20 Most often, optical feedback interferometry entails measurement of power fluctuations in a single-mode laser diode. However, an equally interesting effect takes place when working with multimode devices.…”

Section: Multimode Optical Feedbackmentioning

confidence: 99%

Unusual techniques for absolute distance measurement

Groot

2001

Opt. Eng

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Section: Multimode Optical Feedbackmentioning

confidence: 99%

Unusual techniques for absolute distance measurement

Groot

2001

Opt. Eng

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“…Bosch T et al have used digital sampling signal method and obtained good ranging accuracy [3]; But Gagnon E et al have applied Fast Fourier Transform (FFT) method to process beat signal and a better ranging accuracy is obtained [4].…”

Section: Introductionmentioning

confidence: 99%

“…Compared to conventional laser diode (LD), the single-mode VCSEL has advantages of single mode, circuit beam shapes, lower threshold current, low power consumption and low cost and so on, which can be used widely [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Study on a small modulation and high precision laser range finder using the self-mixing effect in a single-mode VCSEL

Wang

Zhao

et al. 2007

Optoelectronic Devices and Integration II

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The paper proposes a small modulation and high precision laser range finder using the self-mixing effect in a single-mode vertical-cavity surface-emitting laser (VCSEL). According to the characteristic curve of single-mode VCSEL, the nonlinear distortion of ∆λ/∆I is severe and related with the modulation current ∆I, which worsens the system ranging accuracy obviously. In this paper, by applying small current to modulate single-mode VCSEL and specific circuits to process photoelectric signal, the system ranging accuracy is improved obviously. The experiment results show that, using small modulation current ∆I = 0.28 mA p-p, modulation frequency f m = 500 Hz to modulate single-mode VCSEL, and applying difference frequency analog phase-locked loop (APLL) to process the self-mixing beat frequency signals that exist phase abrupt changes, when the sampling time is 0.1 s, the measurement dynamic range is as large as 50 ~ 500 mm, and the ranging accuracy is better than 2 mm.

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“…In many self-mixing type displacement and ranging system, the self-mixing effect that occurs within the semiconductor laser diode (LD) is usually monitored using a photodiode [1][2][3][4][5]. This technique has proven to be robust and reliable, but generally requires an additional photodiode in the laser package for measurements, increasing manufacturing costs.…”

Section: Introductionmentioning

confidence: 99%