High brightness widely tunable, hundred picosecond mid-IR MgO:PPLN optical parametric oscillator with short cavity.

Autor: Li, Zhen-Ling, Zhang, Ao-Nan, Wang, Yun-Ping, Liu, Ke, Wang, Xiao-Jun
Zdroj: Laser Physics; May2024, Vol. 34 Issue 5, p1-6, 6p
Abstrakt: A high brightness hundred picosecond (ps) mid-infrared tunable optical parametric oscillator (OPO) based on MgO doped periodically poled lithium niobate (MgO: PPLN) was demonstrated. The pumping source was provided by a cascade amplified microchip laser at 10 kHz with pulse width of 466 ps. The idler wavelength tuning from 2.8 to 4.3 μ m was achieved by the combination of period and temperature tuning. The maximum idler average output power was 262 mW at 2.8 μ m with a pulse duration of 252 ps, corresponding to 6.7% conversion efficiency. The average beam quality factor was measured to be M 2 = 2.46, resulting in a brightness value of 0.55 MW sr cm−2. Pulse width of 209 ps at 4.3 μ m, which was the shortest pulse width from a short cavity OPO to our best knowledge. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index