Small directly tuned excimer oscillators have been used to injection lock high-power excimer lasers, but their short-gain duration has impeded their widespread use. A long-gain duration (>50 nsec) is important not only for control of wavelength, bandwidth, polarization, and transverse modes by intracavity elements, but it also relaxes critical timing requirements when injection locking a high-power laser. Also, an oscillator operated at a high-input-power density necessary to overcome intracavity dispersive element losses results in a high specific output energy (J liter−1 atm−1) when the laser is operated as an untuned oscillator.

© 1984 Optical Society of America

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