This new kind of green laser pointer is welcomed in the market
Cheng, Li et al reported in 2000 using the flashlamp-pumped Cr and Tm, Ho: YAG crystal in the free-running mode at room temperature to obtain a 4.5J laser output, the output wavelength of 2.098? M slope efficiency of 2.7%, the threshold energy 95J; in the acousto-optic mode at room temperature single-mode output greater than 530mJ, pulse width of 165ns. Crystal diameter 4mm, length 100mm, crystals of Cr3 +, Tm3 +, Ho3 + content of 1.2at%, 6.1at%, 0.4at% [12]. The holmium laser for medical research and development, Coherent Company and other units to a leading position in 1990 to provide users with the Medical holmium laser treatment. The oversea sales of green laser pointer bring more profit for the 100mW green laser pointer company.
Has developed an average power of 20W, 60W and 100W three single-wavelength model, the corresponding repetition rate were 5-20Hz, 5-40Hz and 5-50Hz, the corresponding single-pulse energy of 0.5-2.5J, 0.2-3.5J and 0.2-3.5J, the average power setting for 2J/10Hz 1.5J/40Hz and 2J/50Hz, pulse duration of 500? s. In addition, of 80/100W the dual wavelength Holmium of Nd: YAG laser, repetition rate 2 2011/4/24 West China Normal University, fiber-optic principle of the Created by ** a total of 4 is 5-40Hz, single pulse energy of 0.2-3.5 J, the corresponding average power is set to 2J/40Hz, pulse duration of 500? s. This new kind of green laser pointer is welcomed in the market.
These constitute the Versa the Pulse PowerSuiteTm series holmium laser. Trimedyne company developed holmium laser treatment, the average power of 30W and 80W. 30W holmium laser treatment, the single pulse energy of 0.2-3.5J, a repetition rate of 5-20Hz, pulse duration of 350? S. 80W holmium laser machine uses a unique dual-pulse technology to deliver more energy to the hard tissue while minimizing damage to surrounding soft tissue. The single pulse energy of 0.2-3.5J, the repetition rate of 5-60Hz, double pulse mode, the single pulse energy of 0.4-7J, the repetition frequency of 3-30Hz, pulse duration of 350? S. The oversea market of 50mW blue violet laser pointer needs much stricter supervision.
Domestic 2? M-band solid-state laser materials and laser development, band solid-state laser materials and laser development in 1991 from the Ministry of Electronics 11 launched a holmium laser crystal research. Induction heating Czochralski growth of Cr and Tm, Ho: YAG crystal to solve a series of key technologies of the high efficiency of Cr3 + → of Tm3 + → Ho3 + energy transfer and high optical quality crystal growth process. The main technical indicators have reached the laser rod: the interference fringes of 0.3 / 25mm, scattering particles, single-pulse output energy of 2.3J. 1995 Love in the University of Ye Hongbo, who developed at room temperature Ho: YAG laser output energy 3J. There is still some development space for the domestic sales of 200mW green Laser Pointer .
Used in the experimental pump for pulsed xenon lamp-pumped, condenser chamber is silver-plated single elliptical cavity cooling mode, thermostatically controlled cooling water temperature the floating range of 10 ± 5oC. Experiments using domestic rod size of φ5 × 93mm, the cavity of the concave cavity, the cavity length 280mm. Totally reflecting mirror surface mirror, the curvature of 1m. Output mirror plane mirror in the output mirror transmittance of 29%, cooling temperature 9oC, discharge pulse width at half maximum for the 360? S, the laser threshold 98.4J, single-pulse output more than 3J. 1997 China Institute of Metrology photoelectron Institute Huangli Lei et al, use domestically crystals of Cr3 + (2.3 × 1020cm-3). The expert has noticed the technology difference of green laser pointer .
related green laser pointer blog:
laser pointer pen