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1 results

  • 8 - Transmitting and Receiving Optics

  • Chiao-Yao She, Colorado State University, Jonathan S. Friedman
  • Book:
    Atmospheric Lidar Fundamentals
    Published online:
    24 February 2022
    Print publication:
    03 March 2022, pp 244-267

  • Summary

    In Chapter 8, we give an overview of the optics that control beam transmission and signal reception. We open with a description of the use and benefits of a beam expander to control the output beam divergence. From there, we move to describing receiver optics, starting with the telescope and importance of size, field of view, and using high-quality optics. This includes using an optical fiber to transport the received photons to the downstream filtering and detection optics. Next, we discuss detector characteristics and the trade-offs one must consider when selecting an appropriate photon counting sensor. We follow with a short section on the value of computer modeling the receiver optics. We close the chapter with a concise discussion of atmospheric turbulence and of laser guide stars and adaptive optics for the mitigation of atmospheric turbulence effects on astronomical telescopes.