Laser principle and technology

Laser principle and technology is a compulsory basic course for optical information science and technology, photoelectric information engineering and electronic science and technology.

The purpose is to enable students to master the basic principle, main technology and the latest application of laser in various fields.

This course mainly includes: brief history of laser development and laser characteristics, basic principle of laser generation, optical resonator and laser mode, Gaussian beam, gain characteristics of laser working substance, laser working characteristics, control and improvement of laser characteristics, typical lasers and so on. The basic principle and main technology of laser are introduced in simple terms.

Chapter 1 introduces the basic historical facts related to the emergence of quantum mechanics in the process of laser birth, as well as the mathematical and physical contents in these historical facts.

In chapter 2, the stability of the resonator and the modes in the resonator are introduced.

In chapter 3, Gaussian beam and its relationship with resonant cavity are introduced.

The fourth chapter introduces the interaction between light and atoms in laser, including spectral broadening, gain mechanism and laser oscillation process.

The fifth chapter introduces the light modulation technology, including electro-optic modulation, acousto-optic modulation, direct modulation and magneto-optical modulation.

The sixth chapter introduces the Q-switched pulse laser, including the basic principle, numerical simulation, electro-optic Q-switching, acousto-optic Q-switching and passive Q-switching.

Chapter 7 introduces laser mode-locking, including the basic principle of mode-locking, active mode-locking, passive mode-locking, collision pulse mode-locking and mode-locking fiber laser.

Chapter 8 introduces the basic knowledge of nonlinear optics, including nonlinear polarizability, coupled wave equation and optical frequency doubling.