Study On Angle-tuned Optical Parametric Oscillator Based On Periodically Poled Lithium Niobate

In this dissertation, we theoretically and experimentally investigate optical parametric oscillator in periodically poled lithium niobate based on angle-tuned.Optical parametric oscillators (OPOs) have long held promise as potentially attractive sources of tunable IR radiation. The processing techniques developed in periodically poled materials allowed demonstration of a variety of QPM-OPO. The quasi-phase-matched OPO based on periodically poled materials, pumped by DPSSL are attractive sources of coherent radiation for applications where lasers are unavailable or where wide tune is needed. By tuning the parameters of pumping source, the temperature and the period of the PPLN, we can get high power, high efficiency, wide tune and compact IR lasers, which is useful for a variety of applications, for example, optical communication system, infrared countermeasures, remote sensing, and spectroscopy.In this paper, the research work and discovery are described as following:1. The development and applications of tunable coherent IR radiation are introduced, periodically poled materials. I introduce the different kinds of PPLN and the latest development at home and abroad.2. I introduce the advantages and physical means of QPM, and from the coupled equations, describe the theory of QPM. The development and applications of optical parametric oscillations are introduced, as well as the basic theory.3. We theoretically investigate optical parametric oscillator based on PPLN, including temperature tune, wavelength tune, period tune, angle tune.4. Angle-tuned of OPO. We experimentally investigate optical parametric oscillator in PPLN based on angle-tuned.5. Conclusion. I describe the context of this work in historical perspective and in relation to current research, and discuss prospects for future work.