This dust-proof switch can prevent the dust outside coming into green laser pointer

Although the pump light and the cavity axis direction of the force to change the symbol, but because of the Sisyphus effect, the total friction of the standing wave trap direction is always positive. Their experiments proved to capture three-dimensional cavity cooling power of a single atom. Nature, their results are consistent with the two-level atom model prediction, although fully aware of the exact location of atoms require more detailed theoretical analysis, including the laser polarization effect, a multi-polar structure of the quantum behavior of even atomic. Now, such an approach can know the accurate high-precision optical cavity at low temperatures the number of atoms. Average 17s capture time, single-atom cavity physics has now reached such a point of complete control over the role of the atom - photon experiments in the strong coupling of the atom - cavity area. This dust-proof switch can prevent the dust outside coming into   led flash light .
In addition, in 2007 the the kimble group to achieve high-precision optical cavity strong coupling of single atoms axial ground state cooling [6]. They use a continuous red band Raman transitions in atomic axial cooling, and found that the axial minimum vibration 0:00 level hωα of / 2k B = 13? K the probability of the P0 ≈ 0.95. -9 - East China University of Technology Thesis, single-atom laser imprisoned. Single-atom laser imprisoned 2.1 optical dipole trap capture the principle of single-atom we know that in the absence of the external field, the neutral atoms are electrically neutral, and internal electronic distribution is spherically symmetric, and thus the neutral atom has no permanent electric dipole moment. However, when a two-level atom movement in the non-uniform laser field. Good quality and high performance of this kind of    200mw laser pointer  can be guaranteed for the customer.
Atoms induces an electric dipole moment, and the atoms by laser induced electric dipole the role, and thus the atoms by the dipole-dipole interaction of the laser field changes the state of motion of the atoms. This atomic electric dipole moment of the laser induced phenomenon is commonly known as the AC Stark effect. The use of gradient light field of the optical dipole on the role of the atom is an important way to atom trapping [7]. Atoms placed in the optical field, its internal energy level of the AC Stark effect occurs, the size is proportional to the strength of the light field. In addition, the positive and negative atomic ground state and excited state level frequency shift direction and the detuning of the light field. Red lost harmonic light field in the atomic ground state level to high-frequency direction of frequency shift, while the excited level to the low-frequency direction of frequency shift. The manufacturer has changed the dust-proof switch of this kind of  200mw laser pointer  .