Autonomous ultra-short optical pulse compression, phase compensating and waveform shaping device
US7177027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2002 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Jun 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/503
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus for autonomously compressing, phase-compensating and waveform-shaping an ultrashort light pulse that is fast and high in sensitivity in compensating for phase fluctuations and allows the use of a usual laser light source that is low in light intensity and has large temporal fluctuations in phase. The apparatus comprises: a pulsed light source (2); a spectroscopic spatial dispersing device (4) for spatially dispersing a light pulse (3) emitted from the pulsed light source (2) into spectral components thereof; a spatial light modulator (5) for adding a phase to each of the spectral components of the spatially dispersed light pulse (3); a multiplexer (6) for combining the phase added spectral components of the light pulse (3) together to form a composite output light pulse (7); a modified SPIDER device (8) for forming a spectral interference figure from a portion of the composite output light pulse (7); and a feedback device (9) for detecting a spectral phase from the spectral interference figure and feeding a signal representing a difference between the detected spectral phase and a pre-established phase back to the spatial light modulator (5). The modified …
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