A Second Harmonic Wave Angle Sensor with a Collimated Beam of Femtosecond Laser
An optical angle sensor based on the collimated mode-locked femtosecond laser (Fs) beam, in which the angle measurement is carried out by observing the second harmonic wave generated by irradiating the Fs beam towards MgO:LiNbO3 crystal, is proposed. The angle detection is demonstrated by identifyi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI
2022
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| Online Access: | https://repository.ugm.ac.id/278941/1/Astuti-2_TK.pdf |
| _version_ | 1826050350734376960 |
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| author | Astuti, Wijayanti Dwi Li, Kuangyi Sato, Ryo Matsukuma, Hiraku Shimizu, Yuki Gao, Wei |
| author_facet | Astuti, Wijayanti Dwi Li, Kuangyi Sato, Ryo Matsukuma, Hiraku Shimizu, Yuki Gao, Wei |
| author_sort | Astuti, Wijayanti Dwi |
| collection | UGM |
| description | An optical angle sensor based on the collimated mode-locked femtosecond laser (Fs) beam, in which the angle measurement is carried out by observing the second harmonic wave
generated by irradiating the Fs beam towards MgO:LiNbO3 crystal, is proposed. The angle detection is demonstrated by identifying the second harmonic generation (SHG) spectrum peaks against the angular position of the rotating stage-mounted MgO:LiNbO3 crystal that represents the measurement object. The MgO:LiNbO3 with a length of 2 mm, a cut-off angle of 47◦, a diameter of 5 mm, and 5% of MgO:LN, is rotated within the phase-matching angle over a wavelength range from 1480 nm to 1640 nm. Angle measurement is also carried out by placing the crystal at different positions along the laser beam propagation direction to confirm the feasibility of the angle sensor where the measurement range, measurement sensitivity, and resolution of the proposed method are also evaluated. The result shows that the proposed angle sensor can overcome the working distance
limitation of conventional angle sensors and has no specific material target requirement. Since the configuration of the proposed angle sensor is not limited by the specification of the measurement target, it is expected to have wide potential applications, especially in the manufacturing process and inspection process. |
| first_indexed | 2024-03-14T00:02:35Z |
| format | Article |
| id | oai:generic.eprints.org:278941 |
| institution | Universiti Gadjah Mada |
| language | English |
| last_indexed | 2024-03-14T00:02:35Z |
| publishDate | 2022 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oai:generic.eprints.org:2789412023-11-01T04:23:52Z https://repository.ugm.ac.id/278941/ A Second Harmonic Wave Angle Sensor with a Collimated Beam of Femtosecond Laser Astuti, Wijayanti Dwi Li, Kuangyi Sato, Ryo Matsukuma, Hiraku Shimizu, Yuki Gao, Wei Electrical and Electronic Engineering An optical angle sensor based on the collimated mode-locked femtosecond laser (Fs) beam, in which the angle measurement is carried out by observing the second harmonic wave generated by irradiating the Fs beam towards MgO:LiNbO3 crystal, is proposed. The angle detection is demonstrated by identifying the second harmonic generation (SHG) spectrum peaks against the angular position of the rotating stage-mounted MgO:LiNbO3 crystal that represents the measurement object. The MgO:LiNbO3 with a length of 2 mm, a cut-off angle of 47◦, a diameter of 5 mm, and 5% of MgO:LN, is rotated within the phase-matching angle over a wavelength range from 1480 nm to 1640 nm. Angle measurement is also carried out by placing the crystal at different positions along the laser beam propagation direction to confirm the feasibility of the angle sensor where the measurement range, measurement sensitivity, and resolution of the proposed method are also evaluated. The result shows that the proposed angle sensor can overcome the working distance limitation of conventional angle sensors and has no specific material target requirement. Since the configuration of the proposed angle sensor is not limited by the specification of the measurement target, it is expected to have wide potential applications, especially in the manufacturing process and inspection process. MDPI 2022-05-21 Article PeerReviewed application/pdf en https://repository.ugm.ac.id/278941/1/Astuti-2_TK.pdf Astuti, Wijayanti Dwi and Li, Kuangyi and Sato, Ryo and Matsukuma, Hiraku and Shimizu, Yuki and Gao, Wei (2022) A Second Harmonic Wave Angle Sensor with a Collimated Beam of Femtosecond Laser. Appl. Sci., 2022 (12). pp. 1-14. ISSN 2076-3417 https://www.mdpi.com/journal/applsci https://doi.org/10.3390/app12105211 |
| spellingShingle | Electrical and Electronic Engineering Astuti, Wijayanti Dwi Li, Kuangyi Sato, Ryo Matsukuma, Hiraku Shimizu, Yuki Gao, Wei A Second Harmonic Wave Angle Sensor with a Collimated Beam of Femtosecond Laser |
| title | A Second Harmonic Wave Angle Sensor with a Collimated
Beam of Femtosecond Laser |
| title_full | A Second Harmonic Wave Angle Sensor with a Collimated
Beam of Femtosecond Laser |
| title_fullStr | A Second Harmonic Wave Angle Sensor with a Collimated
Beam of Femtosecond Laser |
| title_full_unstemmed | A Second Harmonic Wave Angle Sensor with a Collimated
Beam of Femtosecond Laser |
| title_short | A Second Harmonic Wave Angle Sensor with a Collimated
Beam of Femtosecond Laser |
| title_sort | second harmonic wave angle sensor with a collimated beam of femtosecond laser |
| topic | Electrical and Electronic Engineering |
| url | https://repository.ugm.ac.id/278941/1/Astuti-2_TK.pdf |
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