HC015ST – Optogalvanic Laser Calibration See Through Hollow Cathode Lamp – Dysprosium - Dy

Spectrolamps has been successfully supplying See Through Hollow Cathode Lamps to Research Centres Worldwide, leading Astronomy and Observatory facilities and major Universities around the world for more than 15 years. The Optogalvanic Effect creates a phenomenon in which the laser light passed through the center of the cathode tuned to a particular atomic transition causes a change in the electric current of the gas discharge. A detectable current signal change is noted when the altered plasma electrical conductivity is created by the shift of the populated energy level of the molecules within the gas plasma when the laser is applied through the cathode. Laser stabilisation application, this effect can also be applied to lock in a laser to a specific frequency precisely with a designated atomic or molecular transition.