Chirped multilayer optics
Chirped mirrors have played a pivotal role in pushing the frontiers of ultrafast technology ever since their discovery in 1993. They allowed the pulse duration to approach the period of the carrier wave and, more recently, shaping of the waveform within the wave cycle and the synthesis of sub-cycle light transients. We continue to advance this technology serving as a cornerstone for attosecond science.
We have developed ultrathin metal filters, metallic mirrors, and a large variety of dispersive (chirped) optics covering the whole spectral range from infrared (IR) over the visible (VIS) up to the ultraviolet (UV) and even to the extreme ultraviolet (EUV). Chirped multilayer mirrors for the VIS-IR spectral range are key elements for the realization of single (few)-cycle optical pulses with < 4 fs duration.
In our laboratory we are able to fabricate thin foils as targets for a number of different applications. Firstly, diamond-like carbon (DLC) foils can be produced, using a filtered cathodic vacuum arc (FCVA) deposition technique. Our thinnest DLC foils have a thickness of only a few nanometres. Using such foils, ion bunches can be efficiently accelerated by the radiation pressure of high-power laser pulses.
Secondly, we produce thin-film targets for nuclear physics experiments, where nuclear reaction mechanisms and nuclear structure of short-lived excited nuclei can be studied. These isotopically enriched targets of stable isotopes are either self supporting or on a suitable backing foil. For their production we use physical vapour deposition and sputtering.
Mechatronic and vacuum-technology systems are essential in all aspects of the research at LEX Photonics. The Design Office in this regard has the task to assist the scientific sector with innovative solutions and primarily responsible for the
- Construction and
of such systems.