Elastic modulus measurement based on virtual image phase array confocal Brillouin spectroscopy technology

Meng Xu; Haisha Niu; Lianqing Zhu; Ying Ning

doi:10.3788/IRLA20200265

Infrared and Laser Engineering, Volume. 50, Issue 4, 20200265(2021)

Elastic modulus measurement based on virtual image phase array confocal Brillouin spectroscopy technology

Meng Xu¹, Haisha Niu¹, Lianqing Zhu^1、*, and Ying Ning²

¹Institute of Instrument Science and Photoelectric Engineering, Beijing Information Science and Technology University, Beijing 100192, China

²Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China

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Figures & Tables(11)

Fig. 1. Basic principle of VIPA

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Fig. 2. Orders overlap phenomenon of the VIPA

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Fig. 3. Confocal Brillouin spectral imaging system

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Fig. 4. Schematic diagram of VIPA spectrometer

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$Two-dimensional spectral principle of VIPA combined with diffraction grating$

Fig. 5. Two-dimensional spectral principle of VIPA combined with diffraction grating

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Fig. 6. Schematic diagram of ultra-narrow line-width filter

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Fig. 7. Typical spectrometer output of the sample

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Fig. 8. Brillouin spectrum of PMMA, polyethylene and silica glass

Fig. 8. [in Chinese]

Fig. 9. Brillouin spectral image of PMMA

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Table 1. [in Chinese]

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Table 1. [in Chinese]

Sample	Density/ g·cm⁻³	Refractive index	Frequency shift/GHz	Elastic modulus/GPa
PMMA	1.18	1.49	15.4	8.92
Polyethylene	0.19	1.51	16	7.23
Silica glass	2.23	1.47	33.8	83.4

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Meng Xu, Haisha Niu, Lianqing Zhu, Ying Ning. Elastic modulus measurement based on virtual image phase array confocal Brillouin spectroscopy technology[J]. Infrared and Laser Engineering, 2021, 50(4): 20200265

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Paper Information

Category: Photoelectric measurement

Received: Mar. 10, 2020

Accepted: --

Published Online: Jul. 30, 2021

The Author Email: Zhu Lianqing (zhulianqing@sina.com)

DOI:10.3788/IRLA20200265

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology