Search for dissertations about: "Free-electron laser seeding"
Found 5 swedish dissertations containing the words Free-electron laser seeding.
-
1. Probing and improving coherence in Free-electron lasers
Abstract : Free electron lasers or FELs, have transformed the way science has been done in the last decades by providing coherent, highly brilliant radiation at wavelengths not achievable with conventional lasers. Their most important characteristic, along side brightness, is their coherence, which allows users to perform experiments that rely on precise phase characteristics of the probing radiation. READ MORE
-
2. Studies on high brightness electron beams for short pulses and free electron laser
Abstract : Accelerator based lightsources are one of the most powerful tools today for producing high intensity radiation at very short wavelengths. While synchrotron storage rings provide a high average brilliance in a wide wavelength range, the next generation of lightsources aim towards producing ultra-short pulses in the X-ray regime. READ MORE
-
3. Toward Creating a Coherent, Next-Generation Light Source with special emphasis on nonlinear harmonic generation in single-pass, high-gain free-electron lasers
Abstract : There is a strong desire for short wavelength (~1 Å), short pulsewidth (.... READ MORE
-
4. Timing Diagnostics and Coherent Harmonics from a test-FEL
Abstract : The test free-electron laser (test-FEL) at MAX-lab in Lund demonstrated for the first time circularly polarized coherent femtosecond pulses at 66 nm wavelength. A 375 MeV electron bunch was seeded by a femtosecond laser at 263 nm and coherent harmonics were extracted in an APPLE-II type elliptical undulator. READ MORE
-
5. Towards ultrafast imaging with extreme ultraviolet light sources
Abstract : This thesis reports experimental studies performed with two advanced coherent XUV sources with ultrashort pulse duration, high-order harmonic generation and seeded-free electron laser. High-order harmonic generation (HHG) is the generation of overtones of a fundamental laser pulse in a medium, e.g. noble gases. READ MORE