green laser pointer has more than three functions
He-Ne laser discharge current on the output power has a great impact. Figure (5-11) is the experimentally measured output power with discharge current curve, we can see, the total for each inflation pressure has a maximum output power of the discharge current, it is with the gas mixing ratio and total pressure about. Inflation in the best conditions, the output power maximum discharge current is called optimal discharge current. By the figure shows, the best discharge current in the vicinity of the discharge current due to changes caused little change in output power. Therefore, in actual use, the requirements for optimal discharge current is not very strict, which is very conducive to the adjustment of working conditions. The memory function of green laser pointer is optional.
He-Ne laser is filled with He gas and Ne gas, and their mixing ratio and total pressure are on the output power has a great impact. Ne laser-generated atomic ratio is too small, the output power will decrease. He's a low ionization potential, the ratio is too large, leaving too much because of electron-ion ionization increase in the number, the lower will be able to maintain a certain electric field, discharge current, electron temperature due to low electric field to stimulate the rate of decline in lower output power drop. Experiments show, He-Ne laser and the existence of optimum mixing ratio of total pressure of the best inflatable, inflatable that there is an optimal condition. The best conditions in the manufacture of He-Ne laser must be considered. The memory function of green laser pointer can be customized as per customer’s requirements.
If the discharge capillary diameter d, pneumatic pressure is p, then there is a maximum output power to make the best pd value. He-Ne laser is about the best pd (4.8 ? 5.3) × 102 Pa ? mm. Because of this phenomenon: on the one hand the decline in pressure of electronic and atomic collisions decrease, resulting in electron temperature (average kinetic energy) increase, stimulate the rate increased; capillary diameter decreases, then the management of electronic and ionic wall composite increased, in order to maintain constant discharge current, the electric field must increase, and the resulting electron temperature will help to stimulate. On the other hand, pd value is too low will result of He, Ne the number of atoms leaving too little to reduce the output power. The following content describe the characteristics of green laser pointer .
Discharge in the best conditions, work material gain coefficient and the capillary diameter d is inversely proportional. By stimulated radiative transition to the next level of Ne laser through spontaneous radiation transferred to the atomic metastable 1S energy level, and then release energy through collisions with the wall means to return the ground state. If the diameter d increases, the atoms reduce the chances of collision with the wall, stuck in the 1S level of the Ne atom spontaneous emission of photons absorbed may return to laser level, resulting in reduction of inversion. The choice of capillary diameter should be considered for the output power and mode requirements and gain, loss of output power diffraction effects. green laser pointer is advanced with IF technology adopted.
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