مقاله انگلیسی الکترواپتیک Tm: لیزر YAP/KLTN با استفاده از مدولاسیون قطبش
Abstract
Keywords
Introduction
Experimental setup
Results
Conclusion
Declaration of Competing Interest
References
ABSTRACT
Electro-optic active Q switched Tm:YAP laser (1940 nm), utilizing a novel switching scheme is presented. The switching is done by a KLTN crystal operated slightly above the ferroelectric phase transition, cut in a trapezoidal shape for reducing acousto-optic oscillations. The novel switching scheme, exploits the emission cross section difference between the main axes in the Tm:YAP, and overcomes the residual oscillations effects even at high repetition rates. The laser exhibited stable operation yielding pulses of 0.95 mJ, and pulse duration of 24 ns at 5 kHz, and pulses of 1.76 mJ and pulse duration of 20 ns at 1 kHz. Increasing the pump diameter from 330 μm to 420 μm has increased the pulse energy at 1 kHz to 2.76 mJ
Introduction
The 2 μm wavelength range is considered as a platform for implementing a wide range of applications. These include in particular LIDARs, remote sensing of gases in the atmosphere, tissue specific microsurgery, and material processing [1,2]. In addition, 2 μm lasers are used as pumps for laser systems and OPOs operating in the MIR spectral range [3].