Atmospheric Monitoring for Very High Energy Gamma Energy Cherenkov Telescopes based on HSRL: Development of High Accuracy Non-Invasive Etalon Characterization Techniques

In the framework of the design of a High Spectral Resolution Lidar (HSRL), a prototype receiver telescope based on a massive parabolic mirror is presented in this work. We also describe performance tests of three available etalons in resolving the He-Ne laser modes are given. Moreover we present a novel, generic and non-invasive characterization method of the etalons to be used for the proposed HSRL. This feature allows highest accuracy in distinguishing the aerosol and molecular backscattered signals.