Development of vertical external cavity surface emitting lasers (VECSELs) for use as monochromatic and polychromatic sodium guidestars

Shawn Hackett; Alexander R. Albrecht; Zhou Yang; Jeffrey G. Cederberg; Mansoor Sheik-Bahae; John T. McGraw; Robert L. Johnson; Jeff W. Richey

doi:10.1117/12.2239240

27 July 2016 Development of vertical external cavity surface emitting lasers (VECSELs) for use as monochromatic and polychromatic sodium guidestars

Shawn Hackett, Alexander R. Albrecht, Zhou Yang, Jeffrey G. Cederberg, Mansoor Sheik-Bahae, John T. McGraw, Robert L. Johnson, Jeff W. Richey

Author Affiliations +

Proceedings Volume 9909, Adaptive Optics Systems V; 99095R (2016) https://doi.org/10.1117/12.2239240
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The work of Pique showed that multiple guidestars emitting at 1140 nm and 589 nm simultaneously could be utilized to correct for Tip and Tilt aberrations [1]. Such a guidestar is hence known as a PLGS (Polychromatic Laser Guidestar). However, no current high power (> 5W) narrow bandwidth (< 1GHz) exist for 1140 nm emission. A Vertical External Cavity Surface Emitting Laser (VECSEL) is shown with high power > 12W and narrow bandwidth emission which has been successfully used to pump the sodium 3P_3/2 to 4S_1/2 sodium transition as a testbed for the development of a CW PLGS system.

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Shawn Hackett, Alexander R. Albrecht, Zhou Yang, Jeffrey G. Cederberg, Mansoor Sheik-Bahae, John T. McGraw, Robert L. Johnson, and Jeff W. Richey "Development of vertical external cavity surface emitting lasers (VECSELs) for use as monochromatic and polychromatic sodium guidestars", Proc. SPIE 9909, Adaptive Optics Systems V, 99095R (27 July 2016); https://doi.org/10.1117/12.2239240

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