Phys.org July 1, 2021
Based on their previous research work on laser, researchers in China further improved the laser performance of Er:YAP laser crystal by laser-diode side-pumping method. A Er:YAP crystal rod with concave end-faces was used to compensate the thermal lensing effect. They achieved maximum output power of 26.75 W at 250 Hz, and 13.18 W at 1000 Hz. They demonstrated a LD side-pumped and electro-optical Q-switched Er,Pr:YAP laser with emission at 2.7 μm. A giant pulse laser was obtained with pulse energy of 20.5 mJ, pulse width of 61.4 ns, and peak power of 0.33 MW at the highest working frequency of 150 Hz.
Such MIR lasers have important application in laser surgery and optical parametric oscillator…read more. TECHNICAL ARTICLE Open Access 1 , 2Â
Schematic of LD side-pumped Er(Pr):YAP laser. Credit: QUAN Cong