Green laser pointer was more common

Gradually reduce the output voltage signal to reduce the laser output power to stop working. The results show that, using the power of the digital control scheme to achieve steady-state laser precision. The design of digital semiconductor laser power, the use of IC C8051F020 as the core programming of smart functionality, such as digital filtering and surge. The circuit uses a constant current source driver chip HY6340 and high-speed integrated operational amplifier, the MAX4215 simplifies the circuit, to improve the control precision. Practical test of the semiconductor laser power, the results show that the output current is 0 ~ 1.5A, current stability, power can achieve the soft-start slow to shutdown, anti-surge function.  green laser pointer  is better received by the customer in the market.
Been tested, the digital power to achieve steady-state accuracy of the laser power requirements, improve system dynamic performance, while simplifying the hardware circuit. Categories and principles of the RF CO2 laser power. Since the advent of 1973 the first radio frequency (RF) waveguide lasers have been more than 26 years. Initially winding the coil on the waveguide to achieve light-emitting RF excited waveguide lasers. It shows for the first time the superiority of the low-voltage excitation. At that time, there are many imperfections. The main drawback is: the uneven discharge, poor coupling efficiency, the coil inductance is too large, limiting the RF frequency increases, only a few MHz. Despite the existence of more than 26 years of development, use history, but it is still in the development and improvement stage. As the laser technology adopted by  green laser pointer  and blue laser pointer has been becoming more and more mature.
Its overall development direction is to: reduce costs, increase life expectancy and improve the output power and efficiency, reducing the volume and quality, improved reliability, and enhance the performance indicators. To adapt to the needs of a variety of purposes. RFCO2 laser operating frequency ISM provisions of 27 ~ 40MHz; its primary segment are as follows: typical working gas for CO2 laser containing: carbon dioxide, nitrogen, helium and xenon. Nitrogen and helium discharge uniformity. Xenon has a positive impact on the power and efficiency of the RF discharge laser. Add 5% xenon allows power increased by 24%. Usually single-mode structure of the device, and continuous (RF) excitation power of the injection unit length is limited to ~ 6W/cm, the conversion efficiency of 10% to 20%. And the cost of manufacturing green laser pointer or blue laser pointer is less.
The general requirements of the laser power: reliable, easy maintenance, high efficiency, small size and low cost. Specific technical conditions are as follows: Input parameters: AC input voltage 220V; AC input current is 1.5A; switching power supply output DC voltage of 30V; switching power supply output current of 8A. RF Power: Input power 160W; operating frequency of 40MHz; sine wave of the output waveform; bandwidth △ f ± 3MHz; efficiency of 70%. Modulator: 0 ~ 100kHz square wave pulse modulation frequency continuously adjustable; duty cycle continuously adjustable; 100% of the amplitude modulation. RFCO2 laser power supply consists of 5 parts [1], shown in Figure 1. Figure 1 RF CO2 laser power supply block diagram.   green laser pointer and blue laser pointer are becoming more and more common.