1030 nm Mirrors For Big and Scary fs/ps Lasers
Leading ULTRAFAST to even higher powers
OPTOMAN LAB NOTEBOOK
While high laser-induced damage threshold is a buzzword when talking femtosecond & picosecond optics, it is not (only) the nominal LIDT value that matters. The separation of laser damage modes - catastrophic and color-change - is evident when measuring standard optics. The fatigue effect of color-change damage becomes even more significant for high-power mirrors after prolonged radiation (>103 pulses).
Color-change effect is an arch-enemy and LIDT-limiting factor for ultrafast applications. It must be eliminated in order to increase the lifetime of the optics.
Standard mirrors (ULLM5) do a good job in most ultrafast applications, however the most demanding applications require special solutions, i.e. SuperHero League (ULLM5SHL) mirrors.
ILLUSTRATION OF A PROBLEM
The fatigue effect of color-change damage becomes even more significant for high-power mirrors after prolonged radiation (>103 pulses) for standard and high power standard mirrors.
Market-Standard High Power Mirrors
OPTOMAN R&D team did a hardcore investigation and developed SuperHero League ULLM5SHL mirrors. Fatigue (color-change) effect is negligible and moreover LIDT got higher.
Standard and SuperHero League Mirrors
> 0.7 J/cm2 @ 1030 nm, 500 fs, 10 kHz, p-pol
>3 J/cm2 @ 1030 nm, 10 ps, 10 kHz, p-pol
> 1 J/cm2 @ 1030 nm, 500 fs, 10 kHz, s-pol
>5 J/cm2 @ 1030 nm, 10 ps, 10 kHz, s-pol