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Frequency-Resolved Optical Gating Using Cascaded Second-Order Nonlinearities
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kwok, Alfred Jusinski, Leonard E. Trebino, Rick P. |
| Copyright Year | 1998 |
| Abstract | We demonstrate frequency-resolved optical gating (FROG) using cascaded second-order nonlinearities (up-conversion followed by down-conversion). We describe two different cascaded second-order beam geometries—selfdiffraction and polarization-gate—which are identical to their third-order nonlinear-optical cousins, except that they use second-harmonic-generation crystals instead of (weaker) thirdorder materials. Like the corresponding third-order processes, these new versions of FROG yield the same intuitive traces, uniquely determine the pulse intensity and phase (without direction-of-time ambiguity), and yield signal light at the input-pulse wavelength (which simplifies the required spectral measurements). Most importantly, however, we show that these techniques are significantly more sensitive than the corresponding third-order FROG methods, conveniently allowing, for the first time, the unambiguous measurement of ultrashort 1-nJ pulses, that is, unamplified Ti:sapphire oscillator pulses. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://frog.gatech.edu/Pubs/Kwok-CcFROG-JSTQE1998.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Hearing Loss, High-Frequency Nonlinear system Oscillator Device Component Polarization (waves) Tracing (software) Version titanium nickelide wavelength |
| Content Type | Text |
| Resource Type | Article |
