How to choose a laser pointer online game?
Laser is harmful to eyes. Do not ventilate in the eye-lit area. Please wear suitable laser goggles indoors or near the blue laser pointer. Avoid pointing the laser pointer directly at the eyes. Laser irradiation of up to 30mW cannot directly face the human body to avoid accidental injury. Keep the laser pointer away from children to prevent danger caused by improper use of the green laser pointer. When not using the laser pointer, remove the battery and save it. In today's society, the compact and easy-to-use green laser pointer as a light source for instruction has been widely used in conferences, teaching, museum visits, mountain climbing, building inspections, military command, help, astronomy and other places. It is used all over the world. There is a lot of market sales. The main core structure of the green laser pointer is the laser diode
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(Laser Diode or LD) Pumped miniature solid-state laser. At present, the most commonly used crystal for making green laser pointers is the combination module of Nd:YV04+KTiOP04(KTP), where Nd:YV04 crystal produces 1064nm near-infrared high powered laser, and KTP crystal converts 1064nm laser into cavity through frequency doubling 532nm green visible light output, the inner light-passing end faces of the two crystals are glued (or photoglue) together, and the light-passing end faces are plated with a dielectric film (such as Nd: The outer end of YV04 crystal is plated with 808nm anti-reflection and 1064nm, 532nm anti-reflection coating near the pump source end, and the outer end of KTP crystal is plated with 808nm, 1064nm high-reflection and 532nm anti-reflection coating close to the pump source end, thereby forming the fundamental frequency light Oscillating, green light output resonant cavity. Since the Nd:YV04 crystal has the advantages of high absorption coefficient, large absorption cross-section, large emission cross-section, and polarized emission, combined with the advantages of the large nonlinear coefficient of the KTP crystal, the light-to-light conversion efficiency of the green laser pointer made therefrom Higher
2021-12-30 13:26:56
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