Therefore, it is very important that how to efficiently synthesize the sub beam of a multi beam communication signal to a bunch of laser pens. In order to solve this problem, this paper proposes a coherent polarization synthesis technique based on optical fiber devices.
Two polarization perpendicular laser pens optical fiber polarization beam combiner for a beam of light, due to changes in the input beam phase difference, beam synthesis of arbitrary polarization. In order to control the synthesis of beam is linearly polarized, to proceed to the next level synthesis or for demodulation of communication signals, the group phase were put forward. Control and polarization control of two methods, and the theoretical analysis and experimental verification.
The use of laser pens cooling technology, molecular cooling for the first time three atoms to near absolute zero (-273.15 C), this is the largest molecular technology so far cooling. Scientists believe that this miracle is expected for the manufacture of molecular quantum computer, but also could become a chemist’s good helper.
Laser pens cooling technology has been used to cool a variety of single atomic physicists, but its molecular cooling difficult. In cooling by laser, laser energy and cooling system of the match, the more atoms and molecules contained in the atomic vibration and rotation, more complex, more difficult, the difficulty is cooling the greater.