Laser pulses cannot generate ultra-short, high-power laser pulses in one step. Therefore, you must first generate short pulses and then amplify them to the required power level. However, short pulses have enough power and may damage the optics passing through after amplification...Contains the crystal of the recommended amplifier for the laser pointer! Therefore, in the amplification process, a specific technique called "frequency shift amplification" must be used. This method was developed in 1985 by a team of Gerard Mrou at the University of Michigan.

Recently, a yellow red laser pointer with a wavelength of 593nm has been launched on the market. Based on DPSS technology, by adding nonlinear crystals, two lasers with wavelengths of 1064nm and 1342nm are obtained. Due to the complexity of the process, even in the jump mode, if overheating or overcooling occurs, the yellow laser pointer will become unstable and inefficient, and the temperature output will be between 1-10 milliwatts. This is because the size of the laser pointer causes the required temperature stability and indoor cooling to fail. In addition, most 593nm laser pointers work in pulse mode, with smaller diode sizes and fewer power pumps.

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