Self-Mixing Laser Diode Velocimetry: Application to Vibration and Velocity Measurement
نویسندگان
چکیده
منابع مشابه
Simultaneous measurement of vibration and parameters of a semiconductor laser using self-mixing interferometry.
Laser diode (LD)-based self-mixing interferometry (SMI) is a promising technique for noncontact sensing and its instrumentation. According to the well-known Lang-Kobayashi equations, an SMI waveform is shaped by multiple parameters, including linewidth enhancement factor (denoted as α), optical feedback level factor (denoted as C), and the movement of the external cavity of an LD. This paper pr...
متن کاملA Fiber-Coupled Self-Mixing Laser Diode for the Measurement of Young’s Modulus
This paper presents the design of a fiber-coupled self-mixing laser diode (SMLD) for non-contact and non-destructive measurement of Young's modulus. By the presented measuring system, the Young's modulus of aluminum 6061 and brass are measured as 70.0 GPa and 116.7 GPa, respectively, showing a good agreement within the standards in the literature and yielding a much smaller deviation and a high...
متن کاملPhase noise of diode laser in self-mixing interference.
We investigate the phase noise of a diode laser based on the interferometric self-mixing effect. A detuned Fabry-Perot cavity converts the phase noise into intensity noise, and the noise is measured by the novel method as a function of the amount of feedback and the distance between the target and the laser front facet. Experimental results can be well explained by theory.
متن کاملMeasuring Young's modulus using a self-mixing laser diode
This paper presents a novel approach for determining the Youngâ€TMs modulus by using a self-mixing laser diode (SMLD). An SMLD system consists of a laser diode (LD), a microlens and an external target. With a small portion of light backscatterd or reflected by the target re-entering the LD inside cavity, both the amplitude and frequency of the LD power are modulated. This modulated LD power is ...
متن کاملLaser Doppler velocimetry of basilar membrane vibration.
A method is described for the measurement of basilar membrane (BM) vibration velocimeter (LDV). The instrumentation was coupled to a compound microscope which served to visualize reflective glass microbeads placed on the BM. The laser beam of the LDV was focused in the microscope object plane and positioned over the reflective bead. We show examples of frequency tuning curves and displacement i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Instrumentation and Measurement
سال: 2004
ISSN: 0018-9456
DOI: 10.1109/tim.2003.822194