Narrow Spectral Emission from a Passively Q-spoiled Neodymium-glass Laser


THE spectral behaviour of the Nd-glass laser has recently attracted much attention. Normally the output of the Nd-glass laser consists of a broad band of wavelengths (approximately 50 Å wide) composed of hundreds of lines centred about 1.06µ (see Fig. 1A). This structure has been described in detail by Snitzer1. Time-resolved spectra1,2 and investigations of the pumping energy dependence of the output band-width3 all may be interpreted on the basis of inhomogeneous behaviour of the Nd+3 emission. The purpose of this communication is to report the efficient generation of a single narrow spectral line from a giant pulsed Nd+3 glass laser by passive Q-spoiling.

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    Keene, W. H., and Weiss, J. A., App. Optics, 3, 545 (1964).

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    Maurer, R. D., in Optical Masers, edit. by Jerome Fox, 435 (Polytechnic Press, New York, 1963).

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    Soffer, B. H., and Hoskins, R. H., Nature, 204, 276 (1964).

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MCFARLAND, B., HOSKINS, R. & SOFFER, B. Narrow Spectral Emission from a Passively Q-spoiled Neodymium-glass Laser. Nature 207, 1180–1181 (1965).

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