transmission of high-power laser light through tapered dielectric tubes and rods - laser light measurement device

Transmission of high-
The power laser of the dielectric tube and Rod in the geometric shape shown in the figure is studied1.
The measurement is with Q-
Use the calibrated "rats nest" force meter to use the ruby laser as the radiation source and (type Westing-house)
Energy measuring device.
The energy in the beam can change between 0. 07 and 1. 0 J.
The characteristic value of the laser pulse is 15 nsec rise-
Time and 30 nsec halfwidth.
For all values of the output energy, the beam shows a typical two-mode pattern.
The energy distribution in each mode is approximate to Gaussian distribution.
The beam is focused by a 6. 4-
The lens with cm focal length is placed at the center of the entrance surface of the light guide.
In all experiments, the angle between the mode axis and the system spindle is 2 °.
In the focal plane, 99 of the total energy is focused in the circular area of 1. 5 mm diameter.
75 of the beam energy is in the area of 0. 5 mm2.
The average power density within the 75% limit is calculated to be about 20 MW/mm2 of 0.
5j laser output.
The light guide plate is drawn in glass.
Blowing Technology from materials with the same optical properties.
The measurement results are shown in Table 1.