High resolution FROG system for the characterization of ps laser pulses
| Autor: | Johannes A. L'huillier, D. Woll, Harry Fuchs, Thorsten Ulm |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Frequency-resolved optical gating Spectrometer business.industry General Engineering General Physics and Astronomy Laser Radius of curvature (optics) law.invention Semiconductor laser theory Optics law Picosecond Spectral width Spectral resolution business |
| Zdroj: | Applied Physics B. 88:393-396 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-007-2730-7 |
| Popis: | We report on a frequency resolved optical gating (FROG) system which allows the reconstruction of amplitude and phase of picosecond pulses generated by mode-locked diode laser oscillators and amplifiers. The main challenge of developing such a FROG system is the required high spectral resolution. In the spectrometer a cylindrical grating with 1200 lines/mm and a radius of curvature of 3 m is used. A width of the illuminated area of 15 cm provides in a spectral resolution exceeding 2 GHz (1.4 pm) at 460 nm. The FROG system is, thus, well suited for analyzing ps-pulses with durations of up to 80 ps and a corresponding fourier-limited spectral width of 0.017 nm. |
| Databáze: | OpenAIRE |
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