What factors does laser pointer strength depend on?
The laser intensity depends on three aspects of wavelength. This will affect the absorption of the target. Most high-power cutting lasers are between 1 um (He-Ne @1.5 um) and 10 um (Co2 @10.6 um). strength. Gas lasers are easy to excite and produce high power laser pointerwavelength. The wavelength of the laser light describes the spatial frequency of the emitted light wave. The optimal wavelength for a given use case is highly dependent on the application. Different materials will have unique wavelength-dependent absorption characteristics in material processing, resulting in different interactions with materials. Similarly, atmospheric absorption and interference have different effects on certain wavelengths in remote sensing. In medical laser applications, various skin colors absorb certain wavelengths differently. Due to the small focus spot, shorter wavelength lasers and laser optics are beneficial to create small and precise features with minimal peripheral heating. However, they are generally more expensive and more easily damaged than longer wavelength lasers.
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Laser pointer power and energy (typical unit: W or J). The power of the laser is measured in watts (W) and is used to describe the optical power output of a continuous wave (CW) laser or the average power of a pulsed laser. Another characteristic of pulsed lasers is that their pulse energy is proportional to the average power and inversely proportional to the repetition frequency of the laser (Figure 2). Energy is measured in joules (J). The working distance of a laser system is usually defined as the physical distance from the final optical element (usually a focusing lens) to the object or surface where the laser is focused. Certain applications (such as medical lasers) generally seek to minimize the working distance, while other applications (such as remote sensing) generally aim to maximize their working distance range. The high-intensity laser pointer operates in different states, for example, ~10 12 –10 15 W peak power, ~10 -12 –10 -14 s pulse length, ~10 14 –10 23 W/cm 2 intensity, And the repetition frequency range is 10 3 –10 6 Hz, and the average power is greater than 10 W. These lasers are used in high-field physics research and have many potential applications. The physical processes related to the interaction of ultrashort pulse laser (USPL) include: light/impact ionization, Kerr and rotating Raman effect, self-phase modulation, filamentation, group velocity dispersion, light shock, frequency chirp, etc. We discussed these interrelated physical processes and some applications of these lasers.
2021-09-18 06:24:31
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