## Proceedings of LFNM'...: International Workshop on Laser and Fiber-optical Networks Modeling, Volume 6Institution of Electrical and Electronics Engineers, 2004 - Fiber optics |

### From inside the book

Results 1-3 of 16

Page 48

1 INTRODUCTION An apertured laser beam inside or outside a resonator always

presents a

determination of the axial position of this intensity maximum is interesting insofar

as this ...

1 INTRODUCTION An apertured laser beam inside or outside a resonator always

presents a

**focal**point where its intensity is maximum . The beforehanddetermination of the axial position of this intensity maximum is interesting insofar

as this ...

Page 49

somewhat closer to the lens . Precisely , with f the lens

wavelength of the beam , It is shown that the

from the geometrical focus toward the lens , which gives a new

fm = f ...

somewhat closer to the lens . Precisely , with f the lens

**focal**length and 2 thewavelength of the beam , It is shown that the

**focal**shift is Af = - f / ( 1 + T2N2 )from the geometrical focus toward the lens , which gives a new

**focal**position asfm = f ...

Page 177

instantaneous power of the beam varying in time , Per is the critical power of self -

focusing ) and equal to radius of

area is scantily studied . The assumption is used that after

instantaneous power of the beam varying in time , Per is the critical power of self -

focusing ) and equal to radius of

**focal**area . The behavior of a beam behind**focal**area is scantily studied . The assumption is used that after

**focal**area beam ...### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Contents

L Lasers and Resonators | 11 |

Optically coupled lasers Invited | 11 |

Mathematical models applied to optical and thermal diagnostic of semiconductor | 17 |

Copyright | |

13 other sections not shown

### Other editions - View all

### Common terms and phrases

absorption active allows amplitude analysis angle aperture application approximation band beam calculated characteristics coefficient coherent components considered constant corresponds crystal defined density dependence described determined developed devices diffraction direction distance distribution e-mail effect efficiency electric electron elements emission energy equal equation excitation experimental expression fiber fibre field Figure frequency function given grating IEEE increase initial intensity interference Kharkiv laser layer length light losses material means measured medium method mirror mode modulation nonlinear observed obtained operation optical oscillators output parameters phase photon Physics plane polarization possible presented problem processes propagation properties pulse quantum radiation range received REFERENCES reflection refraction region relative resonator sample scattering shown shows signal solution spectral spectrum stability structure surface temperature Ukraine University wave waveguide wavelength