Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring
Abstract The carrier-envelope phase (CEP) of an ultrashort laser pulse is becoming more crucial to specify the temporal characteristic of the pulse’s electric field when the pulse duration becomes shorter and attains the subcycle regime; here, the pulse duration of the intensity envelope is shorter...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2023-11-01
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| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-023-01328-7 |
| _version_ | 1827633041445486592 |
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| author | Yu-Chieh Lin Katsumi Midorikawa Yasuo Nabekawa |
| author_facet | Yu-Chieh Lin Katsumi Midorikawa Yasuo Nabekawa |
| author_sort | Yu-Chieh Lin |
| collection | DOAJ |
| description | Abstract The carrier-envelope phase (CEP) of an ultrashort laser pulse is becoming more crucial to specify the temporal characteristic of the pulse’s electric field when the pulse duration becomes shorter and attains the subcycle regime; here, the pulse duration of the intensity envelope is shorter than one cycle period of the carrier field oscillation. When this subcycle pulse involves a structured wavefront as is contained in an optical vortex (OV) pulse, the CEP has an impact on not only the temporal but also the spatial characteristics owing to the spatiotemporal coupling in the structured optical pulse. However, the direct observation of the spatial effect of the CEP control has not yet been demonstrated. In this study, we report on the measurement and control of the spatial wavefront of a subcycle OV pulse by adjusting the CEP. To generate subcycle OV pulses, an optical parametric amplifier delivering subcycle Gaussian pulses and a Sagnac interferometer as a mode converter were integrated and provided an adequate spectral adaptability. The pulse duration of the generated OV pulse was 4.7 fs at a carrier wavelength of 1.54 µm. To confirm the wavefront control with the alteration of the CEP, we developed a novel $$f$$ f -2 $$f$$ f interferometer that exhibited spiral fringes originating from the spatial interference between the subcycle OV pulse and the second harmonic of the subcycle Gaussian pulse producing a parabolic wavefront as a reference; this resulted in the successful observation of the rotation of spiral interference fringes during CEP manipulation. |
| first_indexed | 2024-03-09T14:54:01Z |
| format | Article |
| id | doaj.art-356f7a5829874db6a6141ba730417e03 |
| institution | Directory Open Access Journal |
| issn | 2047-7538 |
| language | English |
| last_indexed | 2024-03-09T14:54:01Z |
| publishDate | 2023-11-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj.art-356f7a5829874db6a6141ba730417e032023-11-26T14:17:15ZengNature Publishing GroupLight: Science & Applications2047-75382023-11-0112111210.1038/s41377-023-01328-7Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoringYu-Chieh Lin0Katsumi Midorikawa1Yasuo Nabekawa2Attosecond Science Research Team, RIKEN Center for Advanced PhotonicsAttosecond Science Research Team, RIKEN Center for Advanced PhotonicsAttosecond Science Research Team, RIKEN Center for Advanced PhotonicsAbstract The carrier-envelope phase (CEP) of an ultrashort laser pulse is becoming more crucial to specify the temporal characteristic of the pulse’s electric field when the pulse duration becomes shorter and attains the subcycle regime; here, the pulse duration of the intensity envelope is shorter than one cycle period of the carrier field oscillation. When this subcycle pulse involves a structured wavefront as is contained in an optical vortex (OV) pulse, the CEP has an impact on not only the temporal but also the spatial characteristics owing to the spatiotemporal coupling in the structured optical pulse. However, the direct observation of the spatial effect of the CEP control has not yet been demonstrated. In this study, we report on the measurement and control of the spatial wavefront of a subcycle OV pulse by adjusting the CEP. To generate subcycle OV pulses, an optical parametric amplifier delivering subcycle Gaussian pulses and a Sagnac interferometer as a mode converter were integrated and provided an adequate spectral adaptability. The pulse duration of the generated OV pulse was 4.7 fs at a carrier wavelength of 1.54 µm. To confirm the wavefront control with the alteration of the CEP, we developed a novel $$f$$ f -2 $$f$$ f interferometer that exhibited spiral fringes originating from the spatial interference between the subcycle OV pulse and the second harmonic of the subcycle Gaussian pulse producing a parabolic wavefront as a reference; this resulted in the successful observation of the rotation of spiral interference fringes during CEP manipulation.https://doi.org/10.1038/s41377-023-01328-7 |
| spellingShingle | Yu-Chieh Lin Katsumi Midorikawa Yasuo Nabekawa Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring Light: Science & Applications |
| title | Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring |
| title_full | Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring |
| title_fullStr | Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring |
| title_full_unstemmed | Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring |
| title_short | Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring |
| title_sort | wavefront control of subcycle vortex pulses via carrier envelope phase tailoring |
| url | https://doi.org/10.1038/s41377-023-01328-7 |
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