NakuLaser Blog

 In the past 2021, there was a great demand for 1064nm single-mode fiber lasers in the market. Most customers apply lasers in the field of scientific research, and they have relatively high requirements for the power stability of the lasers, and customers often ask us to provide a power stability test report that is more than 8 hours. Below is the 26-hour stability test data we did when the power of the 1064nm 100mW SM Fiber laser was adjusted to 43mW. Test instructions: This test eliminated interference factors as much as possible. 1.The laser, optical fiber, and power meter must be absolutely stable and not touchable, keep people away from the test area, and do not touch any part of the laser. 2. The optical fiber is directly connected to the optical power meter, and no adapter is used. 3. Eliminate the interference of the magnetic field near the laser. The basic parameters of 1064nm SM FC laser: The spectrum of 1064nm SM laser: Optical power meter for testing: ThorLab's optical

 It's a 638nm 30W high power fiber coupled laser system . There are CW/TTL/Analog 3 working modes available on the back of the power supply. When TTL/Analog is selected, external signal access is required. A radiator is added to the bottom of the laser head to extend the continuous working time of the laser. The heat sink under the laser head integrates 3 cooling fans.  The laser from optical fiber output port. We add a collimator on the fiber output port, the focal is adjustable. Turn on the laser and adjust the current of the power supply to adjust the output power of the laser. The strong red laser beam from collimator port.

 It's a 543nm 10mW DPSS laser system . The back of the laser head is equipped with a cooling fan. There are 3 working modes available on the back of the laser power supply, CW, TTL and Analog. The red button is pressed to be ON, and the power is turned on. When the safety key is turned ON, laser output starts at this time. Rotate the'Adjustor' button and turn it clockwise to increase the current, thereby increasing the laser output power. Let's check it now. The center wavelength is 542.8nm. And its spot is perfectly round, it is TEM00 mode. 

 It's a 40dBm erbium-doped fiber amplifier . The working status of this EDFA is controlled by buttons. This is a very high power fiber amplifier with 3 cooling fans inside. This EDFA is configured with single-mode fiber. The left and right buttons switch between ACC/APC two control modes. ACC automatic current control, the current setting range is 0~9600mA. APC automatic power control, the power setting range is 23~33dBm.The up and down buttons are to adjust the current/power. The middle button is the confirmation key. Let's check it now. High-power single-mode erbium-doped fiber amplifier (EYDFA-HP) is based on the principle of laser amplification of optical signals in erbium-doped fiber, using unique multi-stage optical amplification design and reliable high-power laser heat dissipation technology to achieve the wavelength range of 1540~1565nm Internal high-power laser output. It has the advantages of high power and low noise, and can be used for optical fiber communication,

 It's a 635nm 15W High power red laser system. 15W is a high-power laser, which generates a lot of heat after working for a long time. We have added a heat sink base to the laser head. The bottom heat sink has 2 cooling fans. This is a fiber coupled laser . The 400μm fiber is pluggable, and it is equipped with a collimator at the fiber output end. Let's check it now. This is the light output effect of the laser head without optical fiber. At this time, the light spot is not concentrated. After adding the optical fiber, the light spot is circular, and the NA (Numerical Aperture) of the optical fiber is 0.22. The light output effect of the fiber light outlet plus the collimator, the focal length of the collimator is adjustable.

 This is a deuterium lamp & halogen lamp 2IN1 source. The deuterium lamp and the tungsten lamp can be controlled separately. The 2IN1 light source has a pluggable fiber.The fiber is a 400μm anti-ultraviolet fiber. The following is a demonstration video of the operation of this light source. Let's check it now. DH Mini is a compact UV visible light source designed for all types of handheld devices requiring low power consumption UV visible mobile spectrum analysis. DH mini system is a complete UV-Vis-Nir light source, including deuterium lamp, 0.25W tungsten lamp, shutter, light path system and SMA905 interface. All the components are installed on a 12V DC / 600mA power supply. The deuterium lamp, tungsten lamp and shutter can be controlled independently by TTL signal.

 Ytterbium-doped fiber amplifier (YDFA) generates gain by pumping ytterbium-doped fiber with a semiconductor laser to amplify laser signals in the 1030~1100nm band, Hi1060 single-mode fiber or PM980 polarization-maintaining fiber output, the output power is continuously adjustable, with high gain and low The advantages of noise. The desktop YDFA is convenient for experimental operation, and the user can adjust the pump current and output power through the buttons on the front panel. It also provides a more compact modular YDFA, which is convenient for users' system integration. It's a Ytterbium-doped Fiber Amplifier. The front panel has LCD display and control buttons. There is an RS232 interface on the back, which can be connected to a computer and controlled by software. In APC control mode, the output power can be adjusted. In ACC control mode, the operating current can be adjusted. The ACC/APC mode can be switched by the button. The working current and output power can b