People may cancel the trouble of changing battery of green laser pointer

The use of china laser pointer would be more convenient and environment-friendly. solution: (1) Sound light medium fused silica MW of = 1/106 of YAG laser wavelength of 1.06 micron He-Ne laser wavelength of 0.633 microns. sound and light medium size of the ultrasonic field diffraction efficiency of 1:00, the power required to a single process gain for the 0.3 sound and light conversion efficiency of 40% acousto-optic devices, acousto-optic devices drive power (2) To work in Prague diffraction District, its sound field frequency size should be the criterion to set, namely L, ≥ 2L0. 3. more than one longitudinal mode laser longitudinal mode number is 1 1000, the laser cavity length is 1.5m, the average power of the output 1w, that the longitudinal mode amplitude equal. (1) Find the mode-locked case, the cycle light pulses, the width and peak power of each is the number? This china laser pointer has treble power saving design.( on the modulator, 2) loss of sound and light modulation element clamping voltage V (t) = Vmcos (ωmt), how can the frequency of the voltage is how much?
the cavity photon number reaches its maximum Φm. tc photons in the cavity on the life of each photon energy hν, the laser peak power Pm = hνΦm/2tc (this question is to draw each parameter with the time diagram, and then analyze the various parameter changes can be).People may cancel the trouble of changing battery of green laser pointer. the vicinity of the polarizing prism EO Q-YAG lasers, try to answer or calculation of the following questions: (1) Draw the structure of the Q-switched lasers diagram, and mark the polarizer polarization axis and the relative orientation of the spindle of the electro-optic crystal (2) how to adjust the polarizing prism from the relative position of partial orientation and crystal to get the desired switching effect?
It is by means of the thermal energy of the laser beam directly destroy a target that can be used against missiles, satellites, tanks, aircraft and other laser confrontation with protective laser countermeasures so-called laser confrontation, the two warring parties to take special measures to to interrupt, destroy the other side of the laser equipment, to loss of function and combat effectiveness, while protecting one’s own military equipment and personnel from laser weapons attack and damage. This china laser pointer supports the hyperlink function.interference countermeasures, anti-jam and destroy the laser against the protective laser protection.