P-081

Monika Skruodienė

monika.skruodiene@cfi.lu.lv

Anatolijs Sarakovskis

Institute of Solid State Physics, University of Latvia

Synthesis and Investigation of CALYO crystals doped with Yb and Ho

CaGdAlO4 (CALGO) and CaYAlO4 (CALYO) are two crystal materials that have attracted interest in the field of laser technologies because of their properties. This crystal has outstanding thermal, spectroscopic and mechanical properties, which enable highly efficient and safe generation of continuous-wave radiations and ultrafast pulses with ever short durations. Also, these materials are known for their ability to act as host lattices for rare earth alloying materials, which improves their optical properties and extends their use in various applications. Ytterbium doped CALGO and CALYO are promising for the development of high-power femtosecond lasers due to their high Yb absorption cross-section and efficiency in generating laser light. Recent research has focused on optimising the doping concentration and understanding the energy transfer dynamics between dopants to maximise the output performance. The ability to generate high-energy pulses in the infrared region (around 1 µm) is a major advantage of these materials, with implications for applications such as telecommunications and materials processing. Holmium doped CALGO and CALYO are of particular interest because of their ability to emit longer wavelengths, typically around 2 µm, which is of great importance in medical surgery and long-distance applications. The coupling of Ho and Yb in these arrays is being investigated with the aim of improving laser performance in energy transfer and thus developing more versatile laser systems. In the present work, phase purity of synthesized powders as well as the novel synthesis procedure is discussed in detail.