The drawing of laser pointer is needed during the meeting

The drawing of laser pointer is needed during the meeting.
But it is generally inconvenient modulation wavelength, and the heating power by the working substance restrictions. The use of synchrotron radiation produced electron in circular motion and a continuous spectrum of radiation, but the broad-spectrum radiation by spectrophotometry, the color intensity is greatly restricted, and non-coherent light. Synchrotron Radiation Facility in decades gone through three generations of development, because it has a wide range of applications, either the world and has dedicated more than 70 devices, with a total investment estimated at more than $ 1 billion. In order to better meet the application requirements, it is the shorter pulse, better coherence, the fourth generation of a higher degree of development of Yao. The following will be presented free-electron laser (later referred to as FEL), it is with these characteristics, a new light source, so the fourth-generation FEL is also known as synchrotron radiation. The advantage of laser pointer price will help the company win the order of laser pointer .
The scope of work in the light most use of radio frequency FEL linear accelerator to provide electronic sources. Its working principle can be summarized as follows. High-energy electrons generated by the accelerator by the deflection magnets alternate in polarity injected into the wiggler. Electronics for doing torsion movement of electromagnetic radiation (light pulses), the downstream and upstream optical pulses by two mirrors and reflections after the recurring role of the electron bunch. The result is movement along the direction of electron clusters into a size smaller than the wavelength of the tiny bunches. These micro-bunches to their kinetic energy into light energy field, increase the amplitude of the light field. This process is repeated several times until the light intensity reached saturation. After the effects of electron deflection magnet is deflected by the lower outside the system. The customer has noticed the advantage of laser pointer price of this laser pointer company.
These are the FEL produces a description of the image comparison process. From the physics point of view, this process is the electron emission stimulated Compton scattering results. Here one of the most critical aspect is to gather as many electronic shorter than the wavelength of the bunch.