Abstract
Appropriate eye protection is a prerequisite for the safe operation of ultrashort laser systems in industrial and laboratory environments. In this paper we report on the measurement of the transmission of ion-doped phosphate glass filters for pulses having a center wavelength of 800nm, a duration of 10fs to 1.2ps and a fluence range of 0.01 to 30J/cm(2). The measurements suggest, that the filter material preserves its protective features over the whole range. Saturation of absorption was only observed in the picosecond pulse duration range.
Highlights
The tremendous progress in ultrafast optics facilitates the widespread use of short pulse laser systems
With the setup described above we measured the incident, transmitted and reflected energy as a function of the incident fluence, the pulse duration, and the number of shots
The large bandwidth of laser pulses emerges as a potential problem for the design and specification of laser protective eye wear
Summary
The tremendous progress in ultrafast optics facilitates the widespread use of short pulse laser systems. Glass filters doped with metal ions and their oxides are successfully applied in order to attenuate laser radiation to an eye-safe level. The investigated filter material has a high linear absorption coefficient (α0=9.43mm-1 @ 800nm) over a reasonable bandwidth, which enables high optical densities for usual filter thicknesses of several millimeters, making the filter ideally suited for blocking radiation from Ti:sapphire laser systems. We opted for this type of material, because similar materials are used by numerous manufacturers of laser safety eye wear
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
