Getting knowledge about construction, particular properties and applications of lasers, specially emphasizing related concepts and methods Light-matter interactions, spontaneous and induced emission, absorption, coherent optical amplifier Bandwidth of amplification, homogenous and inhomogeneous broadening, specific parameters, laser material types . Saturation of laser amplifiers. Different behavior of homogenously and inhomogenously broadened materials. Specific properties of laser beams: bandwidth, divergence, spatial and temporal coherence Basics of laser amplifier design, different amplifying media: solid, liquid gas, pumping mechanisms.. Analysis of solid state amplifiers, thermal effects, pumping schemes Construction of laser resonators, geometrical design steps to fulfill stability condition, building of basic resonator constructions, application examples in optical design software. Continuous wave lasers, saturation, mode-competition, gain and phase-conditions. Pulsed laser operation, techniques, characteristic parameters Conditions for generation of ultrashort laser pulses, practical realizations of active and passive mode-locking, typical configurations. Typical pulse parameters Amplification of ultrashort pulses, regenerative and multi-pass amplifier design principles, practical configurations. Methods to estimate the effects of nonlinear interactions in amplifiers, methods to mitigate chirp and noise Laser diodes, characteristic, design of pumping with laser diodes. Principles of fiber lasers, application for high energy pulse amplification, special techniques Application of lasers in medicine, telecommunication and industry