Grazing Incidence Beam Expander

Prasad R. Akkapeddi; Paul Glenn; Anthony Fuschetto; Quentin Appert; V. K. Viswanathan

doi:10.1117/12.976097

20 November 1985 Grazing Incidence Beam Expander

Prasad R. Akkapeddi, Paul Glenn, Anthony Fuschetto, Quentin Appert, V. K. Viswanathan

Proceedings Volume 0540, Southwest Conf on Optics '85; (1985) https://doi.org/10.1117/12.976097
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States

Abstract

A Grazing Incidence Beam Expander (GIBE) telescope is being designed and fabricated to be used as an equivalent end mirror in a long laser resonator cavity. The design requirements for this GIBE flow down from a generic Free Electron Laser (FEL) resonator. The nature of the FEL gain volume (a thin, pencil-like, on-axis region) dictates that the output beam be very small. Such a thin beam with the power levels characteristic of FELs would have to travel many meters before expanding enough to allow reflection from cooled mirrors. A GIBE, on the other hand, would allow placing these optics closer to the gain region and thus reduces the cavity lengths substantially. Results are presented relating to optical and mechanical design, alignment sensitivity analysis, radius of curvature analysis, laser cavity stability analysis of a linear stable concentric laser cavity with a GIBE. Fabrication details of the GIBE are also given.

Citation Download Citation

Prasad R. Akkapeddi, Paul Glenn, Anthony Fuschetto, Quentin Appert, and V. K. Viswanathan "Grazing Incidence Beam Expander", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); https://doi.org/10.1117/12.976097

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