Laser Physics Quantum Science Laser Physics Quantum Science Quantum Chaos and quantum billiards Singular optics and polarization entanglement Devil’s staircase and geometric lasing modes Diffraction in time and beam propagation Geometry of laser beam and transformation RLC networks as analogs to Quantum billiards Exploring resonant vibration of thin plates:reconstruction of Chladni Patterns Presudo-nondiffracting crystal and quasicrystal beams