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Multipass Yb : KGW disk amplifier
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Abstract
We have investigated a multipass Yb : KGW disk amplifier based on the White cell configuration and pumped by a laser diode with a fibre output. It is shown that the three-mirror layout of the cell is three times more efficient than the four-mirror one, since the size and position of the signal beam on the surface of the active element do not depend on the cell number of passes. For a three-mirror cell scheme, a small-signal gain G = 168 is obtained in experiments for a pump power of 360 W. The experimentally achieved gain of two such amplifiers arranged in series is 6 × 104, which exceeds G
2 approximately two-fold.
Title: Multipass Yb : KGW disk amplifier
Description:
Abstract
We have investigated a multipass Yb : KGW disk amplifier based on the White cell configuration and pumped by a laser diode with a fibre output.
It is shown that the three-mirror layout of the cell is three times more efficient than the four-mirror one, since the size and position of the signal beam on the surface of the active element do not depend on the cell number of passes.
For a three-mirror cell scheme, a small-signal gain G = 168 is obtained in experiments for a pump power of 360 W.
The experimentally achieved gain of two such amplifiers arranged in series is 6 × 104, which exceeds G
2 approximately two-fold.
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