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 (1) What is Er glass？ Er3+, Yb3+ co-doped phosphate glass ( Er, Yb: phosphate glass ) is a popular and normally used active device for lasers generating in the "eye-safe" spectral range of 1,5-1,6 µm. (2) What's the system of erbium glass? Phosphate glass integrates a long life time (~ 8 ms) of 4I13/2 Er3+ top laser degree with a low (2-3 ms) life time of 4I11/2 Er3+ level that continues to be in vibration with Yb3+ 2F5/2 fired up state. Quick non-radiative multi-phonon leisure from 4I11/2 to 4I13/2 level significantly reduces the back-energy transfer as well as up-conversion losses due to the communication between Yb3+ and also Er3+ ions, thrilled at the 2F5/2 along with the 4I11/2 levels, respectively. Essentially continuously, erbium-ytterbium-doped phosphate glass is pumped with wavelengths around the 975-nm absorption height of Yb3+ ions. That leads to the excitation of the ytterbium ions. Afterwards, the excitation power might be transferred to close-by erbium ions...

Know the complete working of Er Glass Laser Range Finder   R ange finders    is a kind of radio navigation equipment, which is used to measure the tilt distance between aircraft and ground transponder. It consists of an airborne interrogator and ground response station. A method for determining the distance between radio waves by measuring the time required for radio waves to travel back and forth from an aircraft to a radio station. In aviation, nearly 1000MHz pulse wave is used for query and response, with an action distance of about 500km, which is used on the route. In addition, in order to cooperate with the work of microwave landing system in the process of approach and landing, a precision rangefinder is developed. The rangefinder uses the pulse front waveform with fast rising speed to improve the accuracy, and its operating distance is about 40 km. The two rangefinders have the same operating frequency and can work compatible. Description 1535nm eye safety laser ...