What decides the color of green laster pointer?

B light per unit area is equal to its surface normal direction within the unit solid angle radiated output power smaller, B higher if the same radiation power per unit area, if the same radiation power per unit area, helium-neon laser light brighter than the sun's brightness high high 0.8 0.8 × 0.8 × 107 times the laser light is very short, laser output power can be high. laser light is very short, laser output power can be high, for example , the ordinary Q-for example, Q-switched ruby laser ordinary pulse power of 10 brighter than the sun is higher pulse power of 10 106 W, brightness 1010 times higher than the sun giant pulse ruby laser: cm2 output power up to 1kMW, ruby giant pulse lasers: Each cm2 output power up to 1kMW, What does the 2.4MHz on the green laster pointer mean?the output power of divergence angle close to a divergence angle close to 1 mrad brighter than the high-voltage pulsed xenon lamp to a high 3.7 billion times brighter than high-voltage pulsed xenon lamp to a high 3.7 billion times 37 billion times 4 space and time highly concentrated on the laser energy in space and time on the highly concentrated, which makes the laser light has a reach of ordinary high-brightness laser energy in space and time on the highly concentrated, which makes the laser light has the reach of ordinary The high brightness. Second, monochrome laser and temporal coherence (a) of § 1-1 monochrome laser basic characteristics of the laser energy level from the same atomic low level E1 to E2 for the spontaneous radiative transition, the same atomic energy levels from low level E1 to E2 for the spontaneous radiative transition,What’s the meaning of 315MHz on the green laster pointer body? it will launch a center frequency of low-energy level E1 to E2 for the spontaneous radiative transition when the spectral lines.'s spectral lines. for the Planck constant, not a single, ν not a single, have a certain width of the frequency spectrum of the linear function: the relative light intensity spectral distribution of optical frequency by relationship lines of the linear function: the relative light intensity spectral distribution by optical frequency relationship frequency ν of light intensity. the total intensity spectrum; the normalized linear function of the normalized linear function (a) the frequency of monochromatic laser atomic spectral line width or the width: the width of the frequency spectrum or atomic line width: § 1-1 of the basic characteristics of the more narrow the laser, light color, the better the laser coherence time than the ordinary light emitted by the light far better than the temporal coherence of laser light emitted by ordinary The light is much better.What does 433MHz on the green laster pointer body show ? Third, the spatial coherence of laser spatial coherence: refers to light at different points of space, spatial coherence: refers to the light of different points of space, given the same time the coherence between light waves, usually measured with a coherent area . coherence between light waves, usually measured with coherent area. Young's double slit interference experiment set up a very narrow slit (without regard to line degrees) 1 set a very narrow slit (without regard to line degree) optical path difference: light path difference: the double-slit separation d double-slit separation d bright stripes dark stripes § 1-1 of the basic characteristics of the laser light and dark stripes not two sets of bright light without light dark stripes overlap.2.4GHz on the green laster pointer body refers to a working frequency band of RF technology.