green laser pointer company manages scientifically

Often the introduction of a so-called "Fresnel number" parameter, when in order to facilitate analysis of the diffraction loss, often introducing a so-called "Fresnel number" parameter, which is defined as the diffraction loss and diffraction loss curve the relationship between the Fresnel number N is usually more complex, the number of Fresnel diffraction loss and the relationship is generally more complex, generally tend to write more complex relationship between the analytical expressions and figures need to use computer . Ruilong green laser pointer firm has been also accepted by other sellers in the same business.Therefore, the analytical expressions and the need for digital computer calculation. Therefore, the result of the calculation are usually drawn into a curve, the curve drawn result of the calculation, which is called the diffraction loss curve shown for the circular cross-section confocal cavity and cavity of circular cross-section parallel to the plane curve δ D ~ N 4-5 cavity diffraction loss curves of different high-transverse mode of inhibition of 7 high-order transverse mode suppression requires two conditions: inhibition of high-order transverse mode requires two conditions: one is to ask the TEM00 beam diffraction loss, making the base transverse mode oscillation not only meet the threshold conditions, diffraction loss, making the base transverse mode oscillation is not only to meet the threshold conditions, and have a greater power output; the other hand, requires higher-order transverse mode is the diffraction loss is large enough.Ruilong green laser pointer company manages scientifically. Large power output; the other hand, requires higher-order transverse mode of the diffraction loss is large enough. Here are two common methods of suppression of higher-order transverse mode. Here are two common methods of suppression of higher-order transverse mode. Single transverse mode selection aperture method: higher order transverse mode of the beam transverse cross-section larger than the base, a single transverse mode selection aperture method: higher order transverse mode of the beam transverse cross-section larger than the base, so reducing the effective aperture of the gain medium a, thereby reducing the Fresnel number N, the gain medium of the effective aperture, thus reducing the Fresnel number, you can greatly increase the high-order transverse mode diffraction loss, which completely inhibited them out. Ruilong green laser pointer firm is meeting new opportunities and challenges.Higher-order transverse mode diffraction loss, which completely inhibited them out. The easiest way is to mirror in the cavity near the place where a diaphragm (that is, the local cavity mirror placed close to a diaphragm (for low gain gas lasers.) Gas lasers). Focus the telescope aperture method and cavity transverse mode selection method. Focus the telescope aperture method and cavity transverse mode selection method. 8 focus the telescope aperture method and the method selected transverse mode cavity aperture focusing method: As shown in the cavity into a lens, as shown, focusing aperture method: as shown in Figure 4-6, the cavity Insert a lens, the beam propagation in the cavity through the larger space as possible, to increase power output. Beam propagation in the cavity through the larger space as possible, to increase power output. Telescope system cavity plus transverse mode selection method, the structure shown below.Ruilong green laser pointer company is willing to make progress with the society. Telescope system cavity plus transverse mode selection method, the structure shown in Figure 4-7. Figure 4-6 Figure 4-7 cavity focusing the telescope aperture Law Act 9 frequency stability stability: Stability: refers to the laser in a continuous operation? Ν S = ν the frequency drift with time, the ratio of oscillation frequency reproduction of: lasers in different locations, time, reproducibility: the laser at different locations, time, δν R = environment, use the relative frequency variation of the confocal cavity TEM00 mode.