Electrical and optical characterization of novel lasers

• Main Author: Gong, Michelle Xin Yi
• Other Authors: Wang Qijie
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2023
• Subjects: Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
• Online Access: https://hdl.handle.net/10356/167686
• Institution: Nanyang Technological University

Quantum Cascade Lasers (QCLs), a new type of semiconductor laser, is able to produce arbitrary laser emission in accordance with customer demands has attracted a lot of interest lately as it can be used for a wide variety of important applications, such as imaging, security, spectroscopy, gas and chemical sensing, communications, military applications, and astrophysics. After years of research, QCLs have emerged as the most effective method for producing mid- and far-infrared semiconductor lasers. The purpose of this project is to explore potential opportunities of QCLs by comparing the QCL based technology with existing laser technology and to understand the future impact of this type of laser technology. Additionally, through the analysis of semiconductor laser performance, including light-current, voltage-current, spectra, and far-field characteristics, the report focuses on approaches to increase the efficiency and accuracy of QCLs. The conclusions of this study could influence how laser technology and its uses develop in the future.