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Multiple pass effects in high efficiency laser pumping cavities.

V Evtuhov¹, J K Neeland

¹Hughes Research Laboratories,Malibu, California 90265, USA.

|January 9, 2010

Summary

This summary is machine-generated.

Multiple passes of pump radiation in laser cavities affect mercury arc lamp performance and lead to lower pulse thresholds. These phenomena are linked to pump light distribution and lamp opacity after repeated passes.

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Area of Science:

Laser physics
Optical engineering

Background:

Laser pump cavities are crucial for efficient laser operation.
Understanding radiation interactions within cavities is essential for optimizing laser performance.

Purpose of the Study:

To investigate the effects of multiple pump radiation passes in laser cavities.
To explain observed changes in mercury arc lamp characteristics and low pulse thresholds.

Main Methods:

Analytical investigation of pump light energy distribution.
Analysis of lamp opacity (flash vs. continuous).

Main Results:

Multiple passes alter mercury arc lamp operating characteristics.
Double elliptical cavities show unexpectedly low pulse thresholds.
Effects are attributed to pump light energy distribution and lamp opacity.

Conclusions:

The shape of pump light energy distribution after multiple passes influences laser cavity performance.
Lamp opacity plays a significant role in observed effects within laser pump cavities.