On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors
The article discusses an acousto-optical (AO) heterodyne laser displacement interferometer (LDI) with two different-frequency photodetectors: highfrequency (HF) and low-frequency (LF) low-noise, working with «fast inaccurate» and «slow accurate» measuring channels, respectively. The mode of ope...
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| Format: | Article |
| Language: | English |
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Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2022-04-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2022/%E2%84%96%202%20(182)%20(%D0%9E%D0%9D%D0%92)/110-118%20%D0%9B%D0%B5%D1%83%D0%BD%20%D0%95.%20%D0%92..pdf |
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| _version_ | 1832570258669436928 |
|---|---|
| author | E. V. Leun |
| author_facet | E. V. Leun |
| author_sort | E. V. Leun |
| collection | DOAJ |
| description | The article discusses an acousto-optical (AO)
heterodyne laser displacement interferometer (LDI)
with two different-frequency photodetectors: highfrequency (HF) and low-frequency (LF) low-noise,
working with «fast inaccurate» and «slow accurate»
measuring channels, respectively.
The mode of operation of AO LDI at start-stop cyclic
motions of objects is described, which provides high
resolution at the initial and final stages of motions
with low speeds of motion. A metrological analysis
of the «slow accurate» channel is carried out taking
into account the noise frequency characteristics of
photodetectors with the formation of its so-called
«optimistic» and «pessimistic» variants. Based on the
metrological analysis carried out, the frequency ranges
of the signal are determined, which allow achieving
the resolution of AO LDI subpicometric values at low
speeds. |
| format | Article |
| id | doaj-art-7b06d1ca2d2848ce8e3aea3a38824503 |
| institution | Kabale University |
| issn | 1813-8225 2541-7541 |
| language | English |
| publishDate | 2022-04-01 |
| publisher | Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education |
| record_format | Article |
| series | Омский научный вестник |
| spelling | doaj-art-7b06d1ca2d2848ce8e3aea3a388245032025-02-02T15:57:41ZengOmsk State Technical University, Federal State Autonoumos Educational Institution of Higher EducationОмский научный вестник1813-82252541-75412022-04-012 (182)11011810.25206/1813-8225-2022-182-110-118On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectorsE. V. Leun0Lavochkin AssociationThe article discusses an acousto-optical (AO) heterodyne laser displacement interferometer (LDI) with two different-frequency photodetectors: highfrequency (HF) and low-frequency (LF) low-noise, working with «fast inaccurate» and «slow accurate» measuring channels, respectively. The mode of operation of AO LDI at start-stop cyclic motions of objects is described, which provides high resolution at the initial and final stages of motions with low speeds of motion. A metrological analysis of the «slow accurate» channel is carried out taking into account the noise frequency characteristics of photodetectors with the formation of its so-called «optimistic» and «pessimistic» variants. Based on the metrological analysis carried out, the frequency ranges of the signal are determined, which allow achieving the resolution of AO LDI subpicometric values at low speeds.https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2022/%E2%84%96%202%20(182)%20(%D0%9E%D0%9D%D0%92)/110-118%20%D0%9B%D0%B5%D1%83%D0%BD%20%D0%95.%20%D0%92..pdflaser displacement interferometerphaselocked frequency systemacousto-optic modulatorphotodetector noisesignal jitterpicometersmallrange phase meter |
| spellingShingle | E. V. Leun On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors Омский научный вестник laser displacement interferometer phaselocked frequency system acousto-optic modulator photodetector noise signal jitter picometer smallrange phase meter |
| title | On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors |
| title_full | On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors |
| title_fullStr | On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors |
| title_full_unstemmed | On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors |
| title_short | On the issue of achieving subpicometric resolution by acousto-optic two-channel laser displacement interferometer with two different frequency photodetectors |
| title_sort | on the issue of achieving subpicometric resolution by acousto optic two channel laser displacement interferometer with two different frequency photodetectors |
| topic | laser displacement interferometer phaselocked frequency system acousto-optic modulator photodetector noise signal jitter picometer smallrange phase meter |
| url | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2022/%E2%84%96%202%20(182)%20(%D0%9E%D0%9D%D0%92)/110-118%20%D0%9B%D0%B5%D1%83%D0%BD%20%D0%95.%20%D0%92..pdf |
| work_keys_str_mv | AT evleun ontheissueofachievingsubpicometricresolutionbyacoustooptictwochannellaserdisplacementinterferometerwithtwodifferentfrequencyphotodetectors |