980nm 600mW pump laser diode Manufacturers

Semiconductor laser has the advantages of small size, light weight, high electro-optical conversion efficiency, high reliability and long life. It has important applications in the fields of industrial processing, biomedicine and national defense.

In the development of narrow linewidth lasers to the present day, the evolution of laser feedback mechanisms has been synonymous with the evolution of laser resonator structures. Below, various configurations of narrow linewidth laser technologies are introduced in the order of the evolution of laser resonators.

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.

Time-domain OCT is mainly composed of Michelson interferometers. The light emitted by the light source is divided into two beams after passing through the coupler, and enters the sample arm and the reference arm of the Michelson interferometer respectively.