Abstract
The Ho:YAP crystal is grown by the Czochralski technique. The room-temperature polarized absorption spectra of Ho:YAP crystal was measured on a c-cut sample with 1 at% holmium. According to the obtained Judd–Ofelt intensity parameters Ω2 = 1.42 × 10−20 cm2, Ω4 = 2.92 × 10−20 cm2, and Ω6 = 1.71 × 10−20 cm2, this paper calculated the fluorescence lifetime to be 6 ms for 5 I7 →5 I8 transition, and the integrated emission cross section to be 2.24 × 10−18 cm2. It investigates the room-temperature Ho:YAP laser end-pumped by a 1.91-μm Tm:YLF laser. The maximum output power was 4.1 W when the incident 1.91-μm pump power was 14.4W. The slope efficiency is 40.8%, corresponding to an optical-to-optical conversion efficiency of 28.4%. The Ho:YAP output wavelength was centred at 2118 nm with full width at half maximum of about 0.8 nm.
Published Version
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