In widely tunable lasers such as Ti:Sapphire and Cr:LiSAF lasers, the tuning region is limited by the bandwidth of the mirror coatings rather than the potential tuning region of the laser material itself. To overcome these problems, we have been developing extremely broadband, lowloss mirrors which enable full range tuning of such tunable lasers.
In this paper, we report the results for near infrared broadband mirrors which cover the entire tuning range of Ti:Sapphire and Cr:LiSAF lasers. These mirrors have reflectances of 99.85% to 99.95 % for wavelengths of 680 to 1060 nm.
