Pulsed-laser vibrometer using photoelectromotive-force sensors

Rodriguez, Ponciano; Trivedi, Sudhir; Feng Jin; Chen-Chia Wang; Stepanov, Serguei; Elliott, Greg; Meyers, James F.; Lee, Joseph; Khurgin, Jacob
September 2003
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1893
Academic Journal
We demonstrate experimentally significant improvement in the sensitivity of photoelectromotive-force (photo-EMF) laser vibrometers using pulsed-light sources. The vibrating surface is discretely sampled by individual laser pulses and recorded by the photo-EMF sensor via the generation of photocurrent pulses whose magnitudes are proportional to the instantaneous surface displacements. With a sufficiently high sampling rate, reconstruction of the vibration wave form can be achieved by conducting envelope (or peak) detection of the resultant series of photocurrent pulses. Significantly higher peak optical power levels of the probe laser pulses, which can be orders of magnitude greater than those of continuous-wave interrogation lasers with the same average power, lead to proportional enhancement in the photo-EMF response and remarkable improvement in detection sensitivity when the photodetection process is initially amplifier noise current limited. © 2003 American Institute of Physics.


Related Articles

  • VIBRATIONAL PARASITES.  // Technology Review;May2002, Vol. 105 Issue 4, p14 

    Features power scavenger 'Cantilever' in California. Specification of the sensor and transceiver; Description of the tiny wireless devices; Conversion of the mechanical pressure on electricity.

  • Single Frequency Monolithic Solid State Green Laser as a Potential Source for Vibrometry Systems. Sotor, Jarosław Z.; Antończak, Arkadiusz J.; Abramski, Krzysztof M. // AIP Conference Proceedings;5/28/2010, Vol. 1253 Issue 1, p313 

    In this paper miniature, monolithic single frequency solid state laser operating at 532 nm is presented. Developed Nd:GdVO4/YVO4/KTP consist of three crystal bonded together with a UV adhesive. The single frequency operation was obtained in wide temperature range from 17°C to 27°C. The...

  • The application of quasi-phase-matched parametric light sources to practical infrared chemical sensing systems. Kulp, T.J.; Bisson, S.E.; Bambha, R.P.; Reichardt, T.A.; Goers, U.-B.; Aniolek, K.W.; Kliner, D.A.V.; Richman, B.A.; Armstrong, K.M.; Sommers, R.; Schmitt, R.; Powers, P.E.; Levi, O.; Pinguet, T.; Fejer, M.; Koplow, J.P.; Goldberg, L.; McRae, T.G. // Applied Physics B: Lasers & Optics;2002, Vol. 75 Issue 2/3, p317 

    Quasi-phase-matched (QPM) materials allow the generation of spectroscopically useful infrared radiation in an efficient and broadly tunable format. Here, we describe several applications of QPM-based light sources to remote and local chemical sensing. The remote systems are gas imagers that...

  • Improved detection of thermally induced higher resonance modes and harmonics of a microcantilever. Kar, A. K.; George, M. A. // Journal of Applied Physics;10/1/2003, Vol. 94 Issue 7, p4626 

    Driving a microcantilever externally may not be desirable in many sensor applications. Alternatively, it is possible to extract full spectral characteristics of the anharmonic thermal motion of a microcantilever naturally vibrating at ambient temperature. Present work aims at the detection of...

  • Six-degree-of-freedom vibration isolation systems with application to resonant-mass gravitational radiation detectors. Aldcroft, T. L.; Michelson, P. F.; Taber, R. C.; McLoughlin, F. A. // Review of Scientific Instruments;Aug1992, Vol. 63 Issue 8, p3815 

    In this paper we discuss passive vibration isolation systems for ultralow temperature gravitational radiation detectors, using a detector at Stanford University as the primary example. We review the basic theory of such isolation systems and describe methods of analysis for one-degree-of-freedom...

  • COMPREHENSIVE MEASUREMENT IN WHOLE-BODY VIBRATION.  // Noise & Vibration Bulletin;Oct2012, p261 

    The article presents a study on the use of inertial sensors as a comprehensive correction methodology to measure human response under single for-aft , single-vertical, and multiple-axis whole-body vibration of twelve seated subjects with supported-backrest and unsupported-backrest upright posture.

  • Development of a light source with an injection-locked Nd:YAG laser and a ring-mode cleaner for the TAMA 300 gravitational-wave detector. Nagano, Shigeo; Barton, Mark A.; Ishizuka, Hideki; Kuroda, Kazuaki; Matsumura, Sumihiro; Miyakawa, Osamu; Miyoki, Shinji; Tatsumi, Daisuke; Tomaru, Takayuki; Uchiyama, Takashi; Ando, Masaki; Arai, Koji; Kawabe, Keita; Ohishi, Naoko; Takamori, Akiteru; Taniguchi, Shinsuke; Tochikubo, Kuniharu; Tsubono, Kimio; Yamamoto, Kazuhiro; Fujimoto, Masa-Katsu // Review of Scientific Instruments;May2002, Vol. 73 Issue 5, p2136 

    We have developed a light source suitable for laser interferometric gravitational-wave detectors. The developed light source has high power, TEM[sub 00] mode, linear polarization, high frequency stability, and low intensity noise. The light source with the quality is essential for attaining the...

  • Elementary experiments in green laser vibrometry. Antończak, Arkadiusz J.; Kozioł, Paweł; Sotor, Jarosław Z.; Kaczmarek, Paweł R.; Wᶏż, Adam T.; Abramski, Krzysztof M. // AIP Conference Proceedings;5/28/2010, Vol. 1253 Issue 1, p321 

    The main disadvantage of He-Ne based Doppler vibrometer is low efficiency and high power consumption of the laser. Many application require compact, high efficiency, single frequency and narrow linewidth laser sources with the output power at the level of tens of mW. These requirements are...

  • Development of a Comprehensive Mathematical Model for Simulating the Effects of Misalignments in Vibration Measurements using Scanning LDV Measurement Systems. Di Battista, S.; Di Maio, D.; Ewins, D. J.; Castellini, P.; Tomasini, E. P. // AIP Conference Proceedings;5/28/2010, Vol. 1253 Issue 1, p29 

    Scanning mirrors are very important contributors of a SLDV system. These mirrors are often installed inside the laser head thereby the optical access of the targeted structure must be always available during testing. However, some applications could benefit of having a laser head decoupled from...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics