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Experimental characterization demonstrates a sustained power-added efficiency (PAE) exceeding 65% across the operating band, with continuous output power tunability. The amplifier also achieves harmonic suppression of better than \u221230dBc, ensuring compliance with spectral purity requirements for sensitive spaceborne instrumentation.<\/jats:p>","DOI":"10.1364\/ao.610160","type":"journal-article","created":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T13:40:51Z","timestamp":1791466851000},"page":"10364","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Design and validation of a high-efficiency RF amplifier for acousto-optic spectrometers"],"prefix":"10.1364","volume":"65","author":[{"given":"Pallab Kr","family":"Gogoi","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02e2c7k09","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mehmet \u015eevket","family":"Uluda\u011f","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02e2c7k09","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0423-3309","authenticated-orcid":true,"given":"Jurgen","family":"Vanhamel","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02e2c7k09","id-type":"ROR","asserted-by":"publisher"}]},{"name":"KU Leuven"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1863-6085","authenticated-orcid":true,"given":"J\u00e9r\u00f4me","family":"Loicq","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02e2c7k09","id-type":"ROR","asserted-by":"publisher"}]},{"name":"University of Li\u00e8ge"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,10,9]]},"reference":[{"key":"ao-65-29-10364-R1","doi-asserted-by":"publisher","first-page":"C103","DOI":"10.1364\/AO.57.00C103","type":"journal-article","volume":"57","author":"Korablev","year":"2018","journal-title":"Appl. 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Further distribution of this work must maintain attribution to the author(s) and the published article\u2019s title, journal citation, and DOI.","name":"copyright","label":"Copyright"}]}}