Note: Simultaneous measurement of in-plane and out-of-plane displacement by using orthogonally polarized self-mixing grating interferometer

Shi, Liheng; Kong, Lingwen; Guo, Dongmei; Xia, Wei; Ni, Xiaoqi; Huang, Hui; Wang, Ming

doi:10.1063/1.5026471

Cited by 4 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum nonlinear error of the ΔL f data is 1.8 nm, indicating that its short period resolution is better than 2 nm. The simultaneous measurements of in-plane and out-of-plane displacements are a significant issue to be researched, such as the grating interferometry [51,52], speckle pattern interferometry [53,54], digital image correlation [55,56], and laser Doppler distance sensing [57]. The resolution of the grating interferometer is a few nanometers, and the accuracy can reach a submicron scale.…”

Section: Displacement Sensingmentioning

confidence: 99%

Precision Dimensional Measurements

2019

View full text Add to dashboard Cite

show abstract

Section: Displacement Sensingmentioning

confidence: 99%

Precision Dimensional Measurements

2019

View full text Add to dashboard Cite

show abstract

“…A frequency demodulation circuit, a digital oscilloscope, and a radio-frequency spectrum analyzer are utilized in the signal processing. The simultaneous measurements of in-plane and out-of-plane displacements are a significant issue to be researched, such as the grating interferometry [51,52], speckle pattern interferometry [53,54], digital image correlation [55,56], and laser Doppler distance sensing [57]. The resolution of the grating interferometer is a few nanometers, and the accuracy can reach a submicron scale.…”

Section: Vibration Sensingmentioning

confidence: 99%

Frequency-Shifted Optical Feedback Measurement Technologies Using a Solid-State Microchip Laser

et al. 2018

View full text Add to dashboard Cite

Since its first application toward displacement measurements in the early-1960s, laser feedback interferometry has become a fast-developing precision measurement modality with many kinds of lasers. By employing the frequency-shifted optical feedback, microchip laser feedback interferometry has been widely researched due to its advantages of high sensitivity, simple structure, and easy alignment. More recently, the laser confocal feedback tomography has been proposed, which combines the high sensitivity of laser frequency-shifted feedback effect and the axial positioning ability of confocal microscopy. In this paper, the principles of a laser frequency-shifted optical feedback interferometer and laser confocal feedback tomography are briefly introduced. Then we describe their applications in various kinds of metrology regarding displacement measurement, vibration measurement, physical quantities measurement, imaging, profilometry, microstructure measurement, and so on. Finally, the existing challenges and promising future directions are discussed.

show abstract

“…Liang Lu from Anhui university has been the supporter of fiber lasers [9], [10]. He-Ne lasers have sometimes been utilized [11], much less frequently than other laser types. Kenju Otsuka is a forerunner to introduce SSLs to the field of SMI [12].…”

Section: Introductionmentioning

confidence: 99%

Influence of Fluorescence to Photon Lifetime Ratio on Detection Sensitivity in Laser Self-Mixing Interferometry

2020

View full text Add to dashboard Cite

Laser self-mixing interferometry (SMI) has been widely applied in the fields of precision measurement in scientific research, industry and biomedicine, and most researchers preferentially utilize laser diodes (LD) as light sources due to their compact structure and low cost. In most SMI cases, detection sensitivity rather than structure and cost is always the first concern. So in this article, we concentrate on an influencing factor on detection sensitivity named fluorescence to photon lifetime ratio (FPLR) which is an inherent parameter of the active material in a laser cavity. Derivation and simulation based on the time delayed rate equations are followed to validate the significant role played by the FPLR, then experiments according to different laser types including solid state lasers (SSL) and LDs are implemented to further prove the factor mentioned. Results demonstrate that SSLs always have higher detection sensitivity to feedback light than LDs, and is always more suitable to be applied in precision measurement. Additionally, the Yb:YAG laser is more sensitive than the Nd:YAG one. Increasing the pumping level from the threshold will decrease the SMI signal's sensitivity, and reducing laser feedback strength will also decrease the SMI signal's sensitivity. The findings from this article are beneficial to studying laser feedback sensitivity and selecting appropriate laser types in designing SMI sensors or instruments. Though with the disadvantages of large size and high cost, SSLs may be more suitable light sources in the field of high performance SMI sensing if miniaturization and cost are not the significant consideration. INDEX TERMS Laser self-mixing interferometry, fluorescence to photon lifetime ratio, sensitivity, solid state laser, laser diode.

show abstract

Note: Simultaneous measurement of in-plane and out-of-plane displacement by using orthogonally polarized self-mixing grating interferometer

Cited by 4 publications

References 16 publications

Precision Dimensional Measurements

Precision Dimensional Measurements

Frequency-Shifted Optical Feedback Measurement Technologies Using a Solid-State Microchip Laser

Influence of Fluorescence to Photon Lifetime Ratio on Detection Sensitivity in Laser Self-Mixing Interferometry

Contact Info

Product

Resources

About