Research Projects

High-power ultrashort laser pulses are a significant interest in various fields, including science, technology, and applied research. However, producing these pulses requires complex nonlinear optical setups and requires pulse compression techniques to obtain few-cycle pulses at any desired wavelength with greater simplicity. This project aims to open a new theoretical way of research using tapered photonic crystal fiber (PCF) amplifiers for the generation of high power ultra-short pulse trains with high repetition rate. Modern technological advances in PCF amplifier fabrication allow for control of dispersion, nonlinearity, gain, and loss, allowing for a robust, compact, and efficient pulse compression device. The proposed research proposal focuses on developing special numerical methods to study the nonlinear optical phenomena of pulse compressors using PCF. The main objective is to propose a novel compression technique to generate high power few-cycle pulses based on self-similar processes in the tapered PCF amplifier. The dynamics of soliton pulse propagation will be studied to understand the physical phenomena of the compressed pulse. Merging these nonlinear optical phenomena with tapered PCF will provide a compact and stable high-power femtosecond laser source. The project aims to generate petawatt level few-cycle pulses numerically and develop more stable, coherent, chirp, and pedestal-free pulses than current commercial sources.