Abstract
The goal of the proposed project is to develop thulium doped sesquoxide transparent ceramic high-energy class laser in nano second regime at cryogenic tempearture. To reach this goal, high quality Tm:Y2O3 transparent ceramic of different doping will be fabricatied. The fabricated transparent ceramic will be characterized in terms of absorption and photoluminescenceat cryogenic temperature (10 K – 300 K). Finally, the fabricated transparent ceramic will be tested in laser resonators to study the impact on laser performance in continous-wave regime and pulsed regime (active and passive Q-switching) at cryogenic temperatures.