optical circulator Manufacturers

Ultrafast amplifiers are optical amplifiers used to amplify ultrashort pulses. Some ultrafast amplifiers are used to amplify high repetition rate pulse trains to get very high average power while the pulse energy is still at moderate levels, in other cases lower repetition rate pulses get more gain and get very high pulses energy and relatively large peak power. When these intense pulses are focused on some targets, very high light intensities are obtained, sometimes even greater than 1016 W/cm2.

Master Oscillator Power-Amplifier. Compared with traditional solid and gas lasers, fiber lasers have the following advantages: high conversion efficiency (light-to-light conversion efficiency over 60%), low laser threshold; simple structure, working material is flexible medium, easy to use; high beam quality ( It is easy to approach the diffraction limit); the laser output has many spectral lines and a wide tuning range (455 ~ 3500nm); small size, light weight, good heat dissipation effect and long service life.

Laser-a device capable of emitting laser light. The first microwave quantum amplifier was made in 1954, and a highly coherent microwave beam was obtained. In 1958, A.L. Xiaoluo and C.H. Towns extended the principle of microwave quantum amplifier to the optical frequency range. In 1960, T.H. Mayman and others made the first ruby laser. In 1961, A. Jia Wen and others made a helium-neon laser. In 1962, R.N. Hall and others created a gallium arsenide semiconductor laser. In the future, there will be more and more types of lasers. According to the working medium, lasers can be divided into four categories: gas lasers, solid lasers, semiconductor lasers and dye lasers. Free electron lasers have also been developed recently. High-power lasers are usually pulsed output.

Optical fiber amplifier refers to a new type of all-optical amplifier used in optical fiber communication lines to achieve signal amplification. Among the currently practical fiber amplifiers, there are mainly erbium-doped fiber amplifiers (EDFA), semiconductor optical amplifiers (SOA) and fiber Raman amplifiers (FRA). Among them, erbium-doped fiber amplifiers are now widely used in long-distance applications due to their superior performance. It is used as power amplifier, relay amplifier and preamplifier in the fields of long-distance, large-capacity and high-speed optical fiber communication systems, access networks, optical fiber CATV networks, systems (radar multi-channel data multiplexing, data transmission, guidance, etc.).