At TARLA, the linear electron accelerator, equipped with two beamlines and five experimental stations, generates [...]]]> The Turkish Accelerator Radiation Laboratory (TARLA) is a multi-purpose and multidisciplinary research facility to promote scientific and technical knowledge on accelerator science and serve researchers and industry “the-state-of-art” capabilities. It is located on the Gölbaşı Ankara University Campus near Ankara.

At TARLA, the linear electron accelerator, equipped with two beamlines and five experimental stations, generates an electron beam with a kinetic energy of up to 40 MeV. This beam is used for Free Electron Laser (FEL) light generation, Bremsstrahlung (gamma radiation) and secondary particle experiments. Furthermore, FEL light is also used in experiments coupled to Pump-Probe and SPM systems. TARLA’s light generation capability spans a wide spectral range from UV to Mid-IR, opening up new research avenues in light & material interaction.

Unlike conventional lasers, where the radiation is produced in a gas, liquid, or solid, in an FEL it is generated by an electron [...]]]> The free-electron laser (FEL) at the Fritz Haber Institute (FHI) generates intense pulses of infrared (IR) radiation of widely tunable wavelength (from 3 µm to 60 µm, as of September 2017).

Unlike conventional lasers, where the radiation is produced in a gas, liquid, or solid, in an FEL it is generated by an electron beam propagating freely through a vacuum tube. In a device called an undulator, strong magnetic fields of alternating polarity force the electrons to undergo a wiggling (undulating) motion, thereby causing the emission of radiation. The radiation wavelength can be tuned simply by varying the electron energy or the magnetic field strength. Before entering the undulator, however, the electrons must be accelerated to almost the speed of light, requiring a complex electron accelerator.

The FHI FEL at the Fritz Haber Institute has been operational since 2013.