High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure
As a high-end medical technology, high-intensity focused ultrasound (HIFU) is widely used in cancer treatment and ultrasonic lithotripsy technology. The acoustic output level and safety of ultrasound treatments are closely related to the accuracy of sound pressure measurements. Heterodyne laser inte...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/12/2225 |
| _version_ | 1797380040920399872 |
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| author | Ke Wang Guangzhen Xing Ping Yang Min Wang Zheng Wang Qi Tian |
| author_facet | Ke Wang Guangzhen Xing Ping Yang Min Wang Zheng Wang Qi Tian |
| author_sort | Ke Wang |
| collection | DOAJ |
| description | As a high-end medical technology, high-intensity focused ultrasound (HIFU) is widely used in cancer treatment and ultrasonic lithotripsy technology. The acoustic output level and safety of ultrasound treatments are closely related to the accuracy of sound pressure measurements. Heterodyne laser interferometry is applied to the measurement of ultrasonic pressure owing to its characteristics of non-contact, high precision, and traceability. However, the upper limit of sound pressure measurement is limited by the bandwidth of the interferometer. In this paper, a high-bandwidth heterodyne laser interferometer for the measurement of high-intensity focused ultrasound pressure is developed and tested. The optical carrier with a frequency shift of 358 MHz is realized by means of an acousto-optic modulator. The selected electrical devices ensure that the electrical bandwidth can reach 1.5 GHz. The laser source adopts an iodine frequency-stabilized semiconductor laser with high-frequency spectral purity, which can reduce the influence of spectral purity on the bandwidth to a negligible level. The interference light path is integrated and encapsulated to improve the stability in use. An HIFU sound pressure measurement experiment is carried out, and the upper limit of the sound pressure measurement is obviously improved. |
| first_indexed | 2024-03-08T20:31:45Z |
| format | Article |
| id | doaj.art-3846ee7e8b2c476f90d60845a8267743 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-08T20:31:45Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-3846ee7e8b2c476f90d60845a82677432023-12-22T14:25:27ZengMDPI AGMicromachines2072-666X2023-12-011412222510.3390/mi14122225High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound PressureKe Wang0Guangzhen Xing1Ping Yang2Min Wang3Zheng Wang4Qi Tian5Division of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, ChinaDivision of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, ChinaDivision of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, ChinaDivision of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, ChinaUltra-Precision Optoelectronic Instrument Engineering Center, School of Instrument Science and Engineering, Harbin Institute of Technology, Harbin 150080, ChinaDivision of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, ChinaAs a high-end medical technology, high-intensity focused ultrasound (HIFU) is widely used in cancer treatment and ultrasonic lithotripsy technology. The acoustic output level and safety of ultrasound treatments are closely related to the accuracy of sound pressure measurements. Heterodyne laser interferometry is applied to the measurement of ultrasonic pressure owing to its characteristics of non-contact, high precision, and traceability. However, the upper limit of sound pressure measurement is limited by the bandwidth of the interferometer. In this paper, a high-bandwidth heterodyne laser interferometer for the measurement of high-intensity focused ultrasound pressure is developed and tested. The optical carrier with a frequency shift of 358 MHz is realized by means of an acousto-optic modulator. The selected electrical devices ensure that the electrical bandwidth can reach 1.5 GHz. The laser source adopts an iodine frequency-stabilized semiconductor laser with high-frequency spectral purity, which can reduce the influence of spectral purity on the bandwidth to a negligible level. The interference light path is integrated and encapsulated to improve the stability in use. An HIFU sound pressure measurement experiment is carried out, and the upper limit of the sound pressure measurement is obviously improved.https://www.mdpi.com/2072-666X/14/12/2225high-bandwidth heterodyne laser interferometersound pressure measurementhigh-intensity focused ultrasoundoptical carrier frequency |
| spellingShingle | Ke Wang Guangzhen Xing Ping Yang Min Wang Zheng Wang Qi Tian High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure Micromachines high-bandwidth heterodyne laser interferometer sound pressure measurement high-intensity focused ultrasound optical carrier frequency |
| title | High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure |
| title_full | High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure |
| title_fullStr | High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure |
| title_full_unstemmed | High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure |
| title_short | High-Bandwidth Heterodyne Laser Interferometer for the Measurement of High-Intensity Focused Ultrasound Pressure |
| title_sort | high bandwidth heterodyne laser interferometer for the measurement of high intensity focused ultrasound pressure |
| topic | high-bandwidth heterodyne laser interferometer sound pressure measurement high-intensity focused ultrasound optical carrier frequency |
| url | https://www.mdpi.com/2072-666X/14/12/2225 |
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