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Internal modulation

Lecture



The modulator is introduced into the cavity and changes its parameters.

Power Management:

For technological purposes, the laser power density is controlled using a conventional lens system.

  Internal modulation

1 - collimator;

2 - working lens.

  Internal modulation   Internal modulation

  Internal modulation

  Internal modulation , if a   Internal modulation (no aberration condition)

  Internal modulation

The formation of the hole in depth is due to the evaporation of the material. Depth of field is the deflection of the focal plane.

  Internal modulation

  Internal modulation   Internal modulation   Internal modulation

The physical process of interaction of the laser beam with the material.

1) Heating of the material as a result of which the mobility of the electrons of the lattice increases.

2) Melting (for welding, cutting, drilling).

3) Secondary electron emission.

4) Thermonuclear reaction.

The angular divergence depends on its mode structure.

  Internal modulation

  Internal modulation

The more transverse modes, the greater the divergence.

  Internal modulation

created: 2014-09-11
updated: 2021-03-13
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Quantum electronics

Terms: Quantum electronics