This kind of laser pointer adopts the special material

For example, laser pointer can be developed for another focusable type.
The formation of a two-dimensional grating together with of YB: YAG standing wave trap. In order to prevent more atoms into the cavity mode, they introduce a phase-out steps. Completed by the standing wave trap 10ms interrupt. During this time, the atoms in the cavity is still trapped in the shallow cavity dipole trap, but the other atoms to be eliminated. If you operate under the adiabatic condition, the trapping of atoms surviving probability higher than 50%. By measuring the rate of photon scattering to determine the cavity atomic precision number. Turn off the laser dipole trap the atoms in the average life expectancy for the 2.7s. It is according to the customer’s feedback and requirement towards laser pointer .
However, if the atomic continuous laser cooling and coupled with the cavity meet? C ≥ 0, the survival time of growth, and its value is more than 20s. This is a deep strong cooling mechanism is active. In particular, when? C = 0, the measured life of atoms, of 17s. That being the case, there is no cavity cooling is not the model, the atomic life of the only from the class of Sisyphus mechanism. The following diagram depicts the life of a single atom as a function of the detuning. Obviously, the emergence of the pumping light, life expectancy to about 100ms, even if the detuning is large to (2 π × 50MHz) cavity invalid. In addition, the concern is close to the resonance cavity to increase the atomic life. We suggest the customer should buy laser pointer with laser heads added.laser pointer has the special design of dust-proof design
Blue detuning of the cavity? C ≈ + κ, the life of a maximum of 400ms of the 20 fold increase, and vice versa red detuned cavity,? C ≈? Of κ, the minimum lifetime value. If this -8 - East China University of Technology thesis, laser cooling of single atoms compared with the theoretical model, expectations of the friction coefficient is shown in the figure. Although these values can not be directly compared with life, but you can get the qualitative conclusions. First of all, Sisyphus cooling force has nothing to do with the cavity only along the standing wave axis, indicating the increase in wave section at the atomic life. Life with? C changes found three directions corresponding with the estimated friction coefficient curve attributed to cavity cooling force. This kind of laser pointer adopts the special material.
Obviously, through four, respectively, is seen as one of the Sisyphus cooling force in the cavity cooling force to increase the time of capture. Not consider more restrictions, such as the collision of the gas, we thus believe that no well adjust? C = 0, observed atomic 17s life expectancy increased in the cavity cooling force? C ≈ + κ for about one minute.