Laser square wave pulse plays an important role in the application of high power optical field. In this work, the modulation phase signal corresponding to the square wave pulse is inversely solved by the method of numerical calculation. And a modified modulation method is proposed, which can generate the coherent square pulse train with constant frequency interval in the frequency domain. It has the potential to provide a solution for the application requirements of high power optical field. In addition, the error analysis of the delay time in the double modulation model is carried out, and the influence of different time delay on the generated square wave pulse deformation is considered qualitatively and quantitatively in one cycle, which provides a theoretical basis and feasibility analysis for the experiment implementation
KEYWORDS: Optical path differences, Crystals, Nd:YAG lasers, Thermal modeling, Oscillators, Numerical analysis, Finite element methods, 3D modeling, Temperature distribution
The thermal lens calculated by numerical calculations plays a significant role in the non-planar ring oscillator (NPRO). And the temperature, strain, and face bugling required for the calculation are obtained by finite element analysis methods. According to the finite element analysis, we can easily know that the maximum temperature of the crystal is 306.5K and the maximum thermal strain is 1.0E-4 with 3W pump power. What most important in the optical path difference analysis is the thermal lens induced by temperature. In this work, we provided the data for studying the influence of thermal lens on loss difference and made the thermal model refined, which is the basis for an optimized resonator design with high power and narrow linewidth seed light source systems.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.