A comparison of the Cassegrain and other beam expanders in high-power pulsed dye lasers

Details A comparison of the Cassegrain and other beam expanders in high-power pulsed dye lasers A comparison of the Cassegrain and other beam expanders in high-power pulsed dye lasers

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ijqe...18.1208t&link_type=abstract

IEEE Journal of Quantum Electronics, vol. QE-18, Aug. 1982, p. 1208-1213. Research supported by Stanford University and U.S. Ai

Physics

Optics

Cassegrain Optics, Dye Lasers, High Power Lasers, Power Efficiency, Pulsed Lasers, Reflecting Telescopes, Grazing Incidence, Spectral Line Width, Spontaneous Emission, Systems Stability

Scientific paper

Beiting and Smith (1979) introduced a pulsed dye laser cavity employing an on-axis reflective Cassegrain telescope in place of the refractive telescope beam expander used in the dye laser oscillator reported by Haensch (1972). The new design has the potential to overcome several drawbacks of the Haensch design. The characteristics of the Cassegrain dye laser are discussed, and a report is presented of some problems encountered in an attempt to achieve efficient high-power operation. Attention is given to amplified spontaneous emission (ASE) and alignment effects, and to a comparison of the Cassegrain dye laser with other commonly used pulsed dye laser designs. It is found that the Cassegrain dye laser has some advantages over the Haensch design. These advantages are mainly related to the larger possible magnification and, hence, better linewidth. But the Cassegrain dye laser retains also several drawbacks inherent in the Haensch model, including alignment difficulty, high cost, and ASE.

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