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Compact architecture for power scaling bounce geometry lasers.

S P Chard¹, M J Damzen

¹Photonics, The Blackett Laboratory, Imperial College London, London SW7 2BW, UK. simon.chard02@imperial.ac.uk

|February 17, 2009

Summary

Researchers developed a novel dual-pumped folded amplifier for compact, high-power lasers. This design achieved over 30 W in a Q-switched oscillator and over 100 W in a master-oscillator power-amplifier configuration.

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Area of Science:

Laser physics
Optical engineering
High-power laser systems

Background:

Bounce geometry lasers offer advantages in compactness and thermal management.
Scaling high-power output from these lasers remains a key challenge.
Advanced amplifier designs are crucial for improving laser performance.

Purpose of the Study:

To demonstrate high-power scaling of bounce geometry lasers.
To introduce a novel dual-pumped folded amplifier design.
To investigate performance in both oscillator and master-oscillator power-amplifier (MOPA) configurations.

Main Methods:

A new dual-pumped folded amplifier was designed and implemented.
The amplifier was integrated into a Q-switched laser oscillator.

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The amplifier was also used in a MOPA configuration.

High repetition rate Q-switching was investigated.

Main Results:

The Q-switched laser oscillator achieved over 30 W of average power from 80 W of pump power at 600 kHz.
The MOPA configuration demonstrated over 100 W of output power from 250 W of pump power.
Very high repetition rate Q-switching (1.7 MHz) was achieved in the master oscillator.

Conclusions:

The dual-pumped folded amplifier design enables compact high-power scaling of bounce geometry lasers.
This design significantly enhances output power capabilities for laser systems.
The demonstrated performance opens possibilities for advanced laser applications.