Each case the number of dye molecules is about 2.7 * 103, is based on known data estimated in the nanoparticles, which is the concentration of dye molecules was first used in radiology research and the use of dye molecules in the future yet to be research and analysis to improve. Theoretical model: In order to calculate the modal system of holes, the model structure is a dielectric through the electric rate is 28 (Figure .1 a) of the excited body, he is a spherical shape of an active shell (refractive index of 1.46 ) golden core. Waveform corresponding to the three-dimensional Debye potential can be analyzed 29. green laser pointer is compatible with systems like Windows 98/ 2000/ME/XP and so on.
Debye potential is a unit under different modal values such as total angular momentum away from the exciton l and its projection of the amount of m (m =- l, ... 0 ,..., l). This experiment the wavelength range 530 nm to meet the minimum requirements of this experimental modal frequency requirements, l = 1 modes, there are three recession levels (m =- 1,0,1). This recession (similar to p-state hydrogen atoms 30). The axis of this mode can be observed from different directions (Figure .1 d) and from the particle geometry on the analysis of this axis is the symmetry axis to deviate from rising. This led to the hole in the l = 1 modes the wavelength (calculated by the appropriate parameter is not) is approximately 525 nm, and the quality factor of 14.8 (mainly due to the loss of gold core).green laser pointer has a long use period.
For the active system, the gain mainly from the activity of the imaginary part of refractive index, the calculation of the standard size of 24 and 29. From the known data, we know the value of stimulated emission, 0G-448 cross-sectional area and their density. In this method, the critical point of the laser frequency and the modal value of 0 for the imaginary part (in line with the laser life). Assuming that an active molecule are assigned from the gold core diameter of 24 nm (44 nm in the activity of the molecule), we found that need to generate stimulated emission roughly 2000 active molecules. green laser pointer has the anti-electricity ability.
Kinetic energy of the radiation measurement: the kinetic energy of the radiation attenuation is the use of a fluorescence microscope of long working hours measured. (Microtime 200) samples at a wavelength of 446 nm light generated when the stress is less than 90ps a 40Mhz frequency laser. The radiation is placed in the microscope the edge of the cavity was measured. A sample is placed between two cover slips, placed in the eyepiece below). Microscope and laser focus diameters of 0.24um and 1um, the density of resonant cavity 9.8 * 105Wcm-2 (4.2 * 104cm-2) stimulated emission at 480 ± 5nm (520 ± 20nm) spectral segment. Laser response time is shorter than 300ps of. green laser pointer can be used for reporting.
Kinetic energy by stimulated emission of radiation by two experimenters, measured at 480nm, calculated as, where a1 = 0.48, a2 = 0.52, τ1 = 1.6ns, τ2 = 4.1ns. According to test the possible error, the measurement accuracy of the data within ± so. Laser life: the life of this laser can be used with the known formula calculated from the spectral domain up, the formula is: where λ is the wavelength, I (λ) is the radiation intensity, n is the refractive index, c is the speed of light. It is the statistic knowledge of green laser pointer.
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