TEM Messtechnik presents its compact spectroscopy unit CoSy with a new species of absorptive gas: vapor of molecular iodine.įor the use of cw single-frequency lasers for high precision metrology applications, in many cases an accurate determination (and sometimes even stabilization) of their oscillation frequency is prerequisite. One easily achieves a long-term stability of the optical frequency below 1 MHz (corresponding to a relative stability of 10 -9) This can be achieved for example with the stabilization electronics LaseLock →. Thus, the used laser can be stabilized towards the detected atomic lines. This setup has been integrated in the described small compact unit, together with the electronics needed for evaluation of the detected beams.Īt the outputs a ‘Doppler-free absorption saturation spectrum’ is directly available and can be visualized on e.g. Usually Doppler-free absorption saturation spectroscopy is achieved by using a relatively complex opto-mechanical setup. The CoSy head is controlled by the power supply and control electronics CoS圜ontrol.It is available with Cesium-, Rubidium- or Potassium cells (other cells on request) The CoSy head contains the setup for the Doppler-free saturation spectroscopy.This permits a generation of extremely precise defined wavelength standards, which can be used for highly precise stabilization of tunable lasers. The CoSy system is a versatile tool for Doppler-free absorption saturation spectroscopy. Jobs, student research thesis and internships.Future – Fiber-based ultrashort pulse lasers.TeraPlant – THz measurement of water in plants. PhaseLock – Laser Synchronization and Phase Locking.MiniPDH – Pound-Drever-Hall Stabilization.CoSy – Doppler-free Absorption Saturation Spectroscopy.LaseLock – Universal laser stabilization electronics.
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