NakuLaser Blog

In the field of modern science and technology, semiconductor lasers have become a shining star in the field of optical technology with their unique performance and broad application prospects. Among them, the 460nm 60W semiconductor laser has become the pinnacle of the blue light source field with its high power, high efficiency, high purity and other characteristics. As can be seen from the video, for a 60W laser, we need to add a heat sink to the bottom of the power supply, which is an aluminum heat dissipation module with 3 fans. On the back of the laser power supply, there are 3 working modes to choose from: CW/TTL/Analog. The two white ports on the data cable are the ports for the fan power supply, which also need to be plugged in. There are multiple groups of laser chips inside the laser. Here, two synchronous data lines are used to control the laser. The customer needs to be able to minimize the laser spot at a specified working distance. A beam expander collimator is added here...

 It's a red line laser system. A 45° line lens was customized at the laser outlet.    This is a 638nm 5Watt high-power semiconductor laser , and a heat sink is added under the laser module. There are CW/TTL/Analog 3 working modes switchable on the back of the laser power supply. Its divergence angle is 45°, 30°~90° divergence angle can be customized. The width of the laser line can also be customized, here is a line width of 1mm at a working distance of 1 meter. The laser output is fan-shaped, and when the laser is irradiated on the wall, it becomes a laser line.

 This time we bring a 915nm high power semiconductor laser . The bottom of the laser module is equipped with a heat sink. Aluminum heat sink and cooling fan can effectively prolong the continuous working time of high-power lasers. There are three working modes of CW/TTL/Analog on the power supply for selection. The power of 60W is very high power, which can instantly ignite the cardboard. Be sure to pay attention to safety when operating, the operator must wear laser protective glasses, and the laser cannot point to other people or other flammable objects. 915nm infrared laser is invisible light, which is invisible to the human eye. Here the laser can easily ignite the cardboard.

 In the video is a 525nm 16W green high power semiconductor laser . A cooling module is added to the bottom of the laser head. This laser supports CW continuous working mode and modulation mode. The output power of the laser is adjustable from 0~16W, through the 'Adjustor' rotary button on the power supply. Here is the free space output mode, also custom fiber coupled lasers are available.  High power green laser.

This is a 435nm 18W high power blue laser coupled optical fiber . Its fiber is pluggable. The Adjustor button on the power supply is used to adjust the working current, and the laser output power can be adjusted by adjusting the current. The laser supports CW continuous working and Modulation working mode, which can be adjusted by the slider button on the back of the laser power supply. Laser output without fiber optic installed. Here the optical fiber interface at the laser module end is FC/PC, align the buckle, insert the fiber, and tighten the fixing nut. Laser output after installing the optical fiber . Please go to CivilLaser learn more details about this 435nm 18W MM fiber coupled laser.

 This is a 1064nm 15W high power infrared laser . An aluminum heat sink is installed under the laser module, which can effectively extend the continuous working time. The radiator is equipped with two cooling fans. There is a small power interface on the side of the data cable close to the laser head for the cooling fan. In addition, the Lock crystal head cannot be pulled out. External signal Mod Input, no need to connect in CW mode. The IR laser supports 3 working modes: CW/TTL/Analog. The following video demonstrates CW working mode. Let's check it now. This is a laser system that adjusts the power by adjusting the current. To adjust the current, turn the 'Adjustor' knob clockwise, when the current exceeds the min working current, the Laser indicator turns green, and there is laser output. 'Adjustor' rotates clockwise to the end, which is the max working current and the max output power of the laser. In addition, the red STOP button is used for emergency stop, ...

 This time we are going to show a 808nm 45W laser system with radiator. The laser head with a radiator, heat sink plus 2 cooling fans. This laser support CW and modulation working mode. Before using it for the first time, please remove the dustproof sticker. Please wear laser protective glasses during operation. Red button is the electrical switch, turn to ON. The key is a laser switch, turn to ON. The black knob is the current regulator, which adjusts the laser output power by adjusting the current. Let's check it now.

It is a 6W red semiconductor laser system . The laser head added a radiator, support longer continous work. The radiator is composed of aluminum sheet and cooling fan. There are CW/TTL/Analog 3 working mode . Its high power red laser beam, we need wear protective glasses.0~6 watt laser power can be adjusted by the button. Let's check it now.

This is a 515nm 10W green laser system. It has three working mode can be choosen: CW, TTL and Analog modulation. During installation, if the laser needs to work continuously for a long time, connect the fan power of the radiator. Adjust the laser power by the button. Let's check it now.

High-power lasers usually generate large amounts of heat, which can easily damage the laser tube for a long time. It is not recommended to use high-power lasers for a long time. Sometimes, the user needs to make the high-power laser work continuously for a long time. Is there any way? Figure 1. Without heat sink, can not work continuously for a long time We have summarized some experiences in actual work to share with you. 1. Select Laser Ask the merchant if the laser is with TEC when buying. TEC (Thermoelectric Cooler) is a semiconductor refrigeration chip, which is widely used in temperature control in various equipment. Figure 2. Heat sink and fan Laser working at high temperatures will cause damage to the laser tube, so it is also necessary to bring an overheating protection module. When the temperature rises to the limit of the laser tube, the laser must automatically stop working. 2. Do a good job of heat dissipation As long as the heat dissipation is done, t...

Recently, the team of researchers of the State Key Laboratory of Superlattice, Institute of Semiconductors, Chinese Academy of Sciences, Niu Zhichuan has made significant progress in the research of single-mode  and high-power quantum well lasers for telluride semiconductors. In recent years, the research team led by Niu Zhichuan's research team has studied the material basis physics of the bismuth semiconductor and the heterogeneous low-dimensional material epitaxy under the support of the National 973 Major Scientific Research Program, the National Natural Science Foundation's major projects and key projects. The technology of growth and optoelectronic device preparation, systematically mastered the chemical analysis of bismuth telluride quantum wells, superlattice low-dimensional materials and molecular beam epitaxial growth methods, breaking through the etching and passivation of germanium quantum well lasers. Based on the core process technology, the innovative design o...

  Abstract:   In recent years ,   the application of high-power semiconductor lasers has been expanding , and they are more and more widely used in industry and medical treatment. The thermal characteristics of lasers seriously restrict their reliability and service life. In order to improve the reliability and prolong the service life of the device , high power semiconductor laser bars with different solders , different thickness of solders and different thickness of WCu heat sink packages were simulated by COMSOL Multiphysics , and the "Smile" values of laser bars under different packaging conditions were measured. The results show that the maximum thermal stress of in solder or AuSn solder occurs at the interface between WCu secondary heat sink and Cu heat sink ;  the thermal stress of laser chips packaged with the same thickness of In solder and AuSn solder is 3.57 GPa and 3.83 GPa respectively , and the peak spectra are 800.5 and 798 nm, respectively. ;  r...