| Popis: |
In this talk we first review the historical development of commercial mode-locked lasers based on titanium doped sapphire, including experimental and theoretical data highlighting the limits of these lasers, especially average output power and tuning range. Commercially available one-box systems are rapidly approaching these limits, with the latest systems offering an average power of more than 2.9W at 800nm, corresponding to more than 350kW peak power. In addition, systems are now becoming available with an extremely wide tuning range, extending from just under 700nm to over 1020nm, using only a single set of optics. These achievements enable further advancements of applications, such as micromachining, which require the highest peak power with increased throughput rates, and multi-photon microscopy where increased tunability and higher average power are of particular benefit. Some of the remaining challenges and the innovative techniques used to address them will also be discussed during the presentation. |
