1. what are the advantages of optical fiber coupling output semiconductor laser?
Semiconductor laser light emitting unit directly to the output of a laser beam to asymmetric elliptical gaussian beam, the divergence Angle is large, light spot uneven, in some application areas, required for plastic and flare homogenization treatment.There are two main ways of commonly used plastic: plastic optical lens and plastic optical fiber coupling.Pure plastic optical lens beam can be compressed into a rectangle but light uniformity is poorer, and flexible use.Through the optical fiber coupling, optical fiber output spot for the circular symmetric there and better uniformity, beam quality improvement;And fiber coupling is the important means to realize laser flexible transmission, semiconductor laser is greatly enhanced the flexibility and operability, used in areas such as health care, processing more flexible and convenient.
Brandnew concentrating on optical fiber coupling, mainly provide fiber coupled laser diode.
2.Second, what is based on the single pipe coupling way?
Brandnew provided by laser are based on the optical fiber coupling single pipe, products include single pipe coupling series, more than one pipe coupling and optical fiber bundle module series.Single pipe coupling way is single LD pipe core light coupling to the optical fiber, after production wrapped a certain output power of semiconductor laser.Single pipe coupling series from 405 nm to 976 nm wavelength, power 2 mw to 10 w.Single tube fiber coupling series more is to use single pipe coupling technology, will put several or even dozens of LD beam are realized by reasonable design of light path, thus coupled into the fiber, the wavelengths from 450 nm to 976 nm, 1.6 W to 200 W power is achieved.Optical fiber bundle module is more than fiber coupled laser module of optical fiber bundle after economic co-operation combined beams coupled into the fiber output again, beam splitter can be from 450 nm to 1550 nm wavelength, power is 300 w.After general high power laser adopts both ways.
3.From the fiber output of beam is what kind of?
Simple speaking, from the finer output of beam is commonly a certain divergence Angle of the circular light spot.Specific beam size is associated with optical fiber core diameter, the size of the divergence Angle is determined by the optical fiber numerical aperture.Commonly used optical fiber can be divided into single mode and multimode, single-mode core diameter from 2.9 mu mu m to 9 m, multimode core diameter from 50 microns to 400 microns, numerical aperture of 0.15 0.22 NA NA and general.Numerical aperture is refers to the beam incident Angle of total reflection in optical fiber transmission of sine value, can be simply regarded as the divergence Angle of laser out the fiber, 0.22 NA represent divergent Angle is 12.5 ° Angle (half), 0.15 NA represent divergent Angle of about 8 °
