Er,Yb:YAB crystals «In Stock»

Er³⁺, Yb³⁺ co-doped yttrium-aluminum borate (Er, Yb:YAB) crystal is an alternative to commonly used Er,Yb:phosphate glass as an active medium of “eye-safe” (1,5-1,6 µm) lasers with a high average output power in CW and pulsed modes. It is characterized by high thermal conductivities of 7,7 Wm^-1K^-1 and 6 Wm^-1K^-1 along a-axis and c-axis, respectively.

It also features a highly effective Yb3+ to Er3+ energy transfer (~94%) and weak upconversion losses due to the very short lifetime of ⁴I_11/2 excited state (~80 ns) facilitated by high maximum phonon energy of the host material (hvmax ~1500 cm^-1). A strong and wide (~17 nm) absorption band is observed at 976 nm that coincides with the emission spectrum of InGaAs laser diodes.