Any relationship between laser Light and synchrotron Light and pure light in space??

Answer 1

Good question. You have mentioned three types of light. Light is what we called electromagnetic (EM) radiation, or oscillations of electric and magnetic fields which propagate through the Universe due to their self interaction. How is this works is worthy of another question altogether -- feel free to ask! EM radiation comes in a variety of wavelengths, stretching from the radio, through the infra-red, through optical (which our eyes can detect), the ultra-violet, the X-rays, and finally Gamma rays.

Laser light, which comes from the acronym LASE (Light Amplification through Stimulated Emission) refers to optical light at a specific wavelength. You see, the vast majority of light moving around the Universe is made up of a wide range of wavelengths. Through special laboratory techniques, we can create light that contains only a very narrow range of wavelengths. This is laser light. Interestingly, the same conditions do occur naturally in some astronomical objects (usually in star forming regions). In this case, the EM radiation is in the microwave part of the spectrum, and so we call this maser light.

Synchrotron radiation is created by electrons (or any other charged particle) moving very rapidly in a magnetic field. The magnetic field cause the electron to move in a helical pattern. Now, because the electron's direction of motion is always changing (as it must to stay in a helix), it is always undergoing acceleration. The theory of interaction between electromagnetic fields and charged particles tells us that an accelerating charge will emit light. This light will depend on the electron energy and the magnetic field strength. Typically, you will have many electrons which have a standard energy distribution. This will lead to the well-known synchrotron power-law spectrum.

As for "pure light", I assume you mean any light which exists in the Universe. Laser and Synchrotron radiation are two examples of how it is generated, but there are many more. These include (but are not limited to): blackbody radiation, electron transitions in molecules or atoms, Thomson and Compton scattering, annihilation of anti particles, and nuclear transitions.

An undergraduate-level textbook you might find interesting is "Optics" by Eugene Hecht. A graduate-level textbook is "Radiate Processes in Astrophysics" by Rybicki & Lightman

Answer 2

Laser light is a single frequency
A synchrotron would produce light of a certain frequency depending its use at the time.
Pure light is a mixture of all frequencies.

Answer 3

--Simply stated---It could be said that they both are what has been coined a "coherent light" source or energy. This meaning that the particles are indeed focused tightly.

--Where as a light bulb or the suns light is in fact "incoherent" or widly spread.