Abstract

A repetitively pulsed, tunable ruby laser has been designed and constructed as a light source for high resolution absorption spectroscopy and selective photochemical excitation. The frequency is tuned over a range of approximately 20 cm−1 by changing the temperature of the ruby. The use of a solid sapphire etalon for mode control results in linewidth and stability within 0.04 cm−1 over durations exceeding 25,000 consecutive pulses. Repetition rates of up to 2 pulses/sec at output energies of 0.5 J/pulse are maintained. Design and performance features of the laser are presented, and examples of its application are shown.

© 1968 Optical Society of America

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