The design of green laser pointer can be improved more

Laser structure shown in Figure 8. The laser frequency conversion structure for the cavity, the resonant cavity containing two side-pumped Nd: YA G modules dual-rod structure, gain blocks inserted between the two 90 ° quartz rotator and birefringent compensator to achieve such as transmission and birefringence compensation, while the cavity into two Q-switched (QS) under high-power Q-switched off. I used 20 mm long LBO class of non-critical phase matching for frequency doubling, using 20 mm long LBO for type II phase matching and frequency, experiment 2. 7 kW pump, in the 8 k Hz was 160 W when the average The 355 nm UV laser power output, the output characteristic curve shown in Figure 9 (a). The design of green laser pointer can be improved more.
Measured at 10 k Hz UV laser output beam quality oval, in two orthogonal directions of the beam quality measurement results M2x = 18 and M 2y = 16, the measurement results shown in Figure 9 (b). 4. 2 266 nm high-power solid-state UV lasers in 2000, Japan's Mitsubishi Corporation and Osaka University, reported a 20 W of 266 nm UV laser [34]. The laser structure shown in Figure 10, the use of bright high-power 532 nm green laser light as the fundamental frequency, the quality factor M 2 is 10, in 10 k Hz when the power of about 100 W, pulse width of 80 ns. Using 15 mm long type I phase matching CLBO crystal frequency. At 10 k Hz under, 105. 8 W green light to get through the CLBO multiplier 20. 5 W, 266 nm UV laser. The research ability of testing center of green laser pointer is powerful.
Green to UV conversion efficiency of 19. 4%, UV laser beam quality M of about 10. In 2003, 2 was increased to 23 W [35]. Since then, the group also used as the base frequency of 200 W green light, green light beam quality of 10, a repetition rate of 7 k Hz, corresponding to the pulse width of 80 ns. Using 15 mm long type I phase matching CLBO crystal as FO HG frequency of green light, get a 40 W output power, 266 nm UV laser output, corresponding to the green to UV conversion efficiency of 20% [36]. In 2007, the team used as FO HG and FHG CLBO crystals, in 10 k Hz repetition rate was 27. 9 W, 266 nm UV laser and 10. 2 W, 213 nm deep-UV laser [37]. In 2006, the Institute of Physics, Chinese Academy of Sciences reported 28. 4 W, 266 nm UV laser output [38]. The development ability of green laser pointer can be improved.

And output characteristics of the laser structure shown in Figure 11. Work in the 10 k Hz using the 120 W green laser frequency, pulse width of the green 80 ns. 40 mm long type I phase matching CLBO crystal for frequency doubling green light to get 28. 4 W, 266 nm UV laser output, from green to UV conversion efficiency up to 24.7%. The team used the same structure, the 266 nm UV laser output power Figure 10 20. 5 W, 266 nm UV laser experimental device laser. (A) Experimental setup, (b) power output characteristics. The working instruction of green laser pointer includes the shipping description of green laser pointer.
The group all solid-state 355 nm and 266 nm YVO4 MO PA laser, its seed source for the acousto-optic Q (AO Q) laser research work in recent years, the research team in all aspects of solid-state UV lasers to carry out a series of studies, mainly concentrated in high-power, high efficiency, high beam quality, high repetition rate and long life and so on. In the high power and high repetition rate in this group reported a 43 W high beam quality, high-repetition rate of 355 nm UV laser output [39]. Laser structure shown in Figure 12. The fundamental wave of Nd: double-end-pumped Nd: YVO4 laser, seed light magnified by multi-level, into the frequency converter module. The shipping description of green laser pointer is in the manual of green laser led.