Principle:
In the Michelson arrangement interference will occur by the use of 2 mirrors. The wavelength is determined by displacing one mirror using the micrometerscrew.
Tasks:
Determination of the wavelength of the light of the used laser.
W ...
Principle
A Mach-Zehnder interferometer is lit by a diverged laser beam. Ring-shaped interference patterns then appear on the screen behind the interferometer. If polarisation filters with perpendicular alignments are placed in the two arms of the interferometer, the interfer ...
In contrast to normal photography a hologram can store information about the three-dimensionality of an object. To capture the three-dimensionality of an object, the film stores not only the amplitude but also the phase of the light rays. To achieve this, a coheren ...
Small particles in a current pass through the LDA measuring volume and scatter the light whose frequency is shifted by the Doppler effect due to the particle movement. The frequency change of the scattered light is detected and converted into a particle or flow velo ...
The difference between spontaneous and stimulated emission of light is demonstrated. The beam propagation within the resonator cavity of a He- Ne laser and its divergence are determined, its stability criterion is checked and the relative output power of the laser i ...
The visible light of a semiconductor diode laser is used to excite the neodymium atoms within a Nd-YAG (NeodymiumYttrium Aluminium Garnet) rod. The power output of the semiconductor diode laser is first recorded as a function of the injection current. The fluorescen ...
The rate equation model for an optically pumped four-level laser system is determined. As lasing medium, a Nd:YAG (Neodymium-Yttrium Aluminium Garnet) rod has been selected which is pumped by means of a semiconductor diode laser. The IR-power output of the Nd:YAG la ...
The beam of a laser diode is treated in a way that it can be coupled into a monomode fibre. The problems related to coupling the beam into the fibre are evaluated and verified. In consequence a low frequency signal is transmitted through the fibre. The numerical ape ...
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