NakuLaser Blog

With the rapid development of science and technology, fiber lasers, as an efficient and stable light source, have been widely used in many fields such as communications, medical treatment, and material processing. Among them, the 1550nm nanosecond fiber laser plays an increasingly important role in scientific research and industrial applications due to its unique wavelength characteristics and excellent performance. First, let's take a look at the wavelength characteristics of the 1550nm nanosecond fiber laser. 1550nm is located in the infrared spectrum range and belongs to near-infrared light. Laser of this wavelength shows excellent transmission performance in optical communications, which can effectively reduce fiber loss and improve communication efficiency. At the same time, in the fields of medical treatment and material processing, the 1550nm laser has strong penetration and can achieve precise treatment of deep tissues and fine processing of high-hardness materials. Nanosec...

 The one in the video is a benchtop 40dBm erbium-doped fiber amplifier. The input and output fibers of the PM amplifier are polarization maintaining fiber PM1550 and the connector keys are aligned the slow axis. This EDFA is designed to amplify optical signals up to 10W average power for high power applications at 1550nm wavelength range. The operating current or output power can be adjusted by pressing the button. You can choose the software control function and use the RS232 interface to connect to the software. The two working modes of ACC and APC can be switched. In APC mode, the output power can be adjusted. In ACC mode, the operating current can be adjusted. The high-power polarization-maintaining erbium-doped fiber amplifier is based on the polarization-maintaining double-clad erbium-doped fiber amplification technology. It adopts a unique fiber packaging process and a reliable high-power laser protection design to achieve high-power laser polarization-maintaining output i...

  622nm 200MHz SM Optical Fiber-Coupled Acousto-optic Modulator AOM This is a 6220nm 200MHz Fiber Coupled AOM with Driver. It is equipped with single-mode fiber, and polarization-maintaining fiber can also be customized. The radio frequency interface is SMA. We provide customized AOM service, different working wavelength and RF frequency can be customized. The rise/fall time of this modulator is 10ns. Let's check it now. [Specifications] Parameter Unit Min Max Typical Value Remarks Material TeO² Wavelength nm 600 640 622 Average Optical Power Handling W Peak(pulse) Optical Power Handling kW Ultrasonic Velocity m/s 4200 Insertion Loss dB 3 Polarized Extinction Ratio (PER) dB ER(1st order ON/OFF) dB 50 Return Loss (RF ON) dB 40 Rise/Fall-Time ns (10%~90%) Center Frequency MHz 200 Frequency Shift MHz +200 -200MHz can be customized Radio Frequency Power W Voltage Standing Wave Ratio (VSWR) Input Impedance Ω 50 Device Interface SMA Fiber Type SM/PM Fiber Default SM Fiber Fiber Length m ...

What we bring today is a 1550nm fiber-coupled acousto-optic modulator with a driver. The 1550nm acousto-optic modulator is an external modulation technology, and the acousto-optic device that controls the intensity of the laser beam is usually called an acousto-optic modulator. The 1550nm AOM has the advantages of high modulation extinction ratio and high power withstand, and is widely used in the field of optical fiber sensing. This acousto-optic modulator is coupled to a single-mode fiber, and custom polarization-maintaining fibers are also available. In addition, the working wavelength and RF frequency of AOM can also be customized. The test report of 1550nm 200MHz SM fiber coupled AOM.

 Today we are introducing a 523.5nm green diode pumped solid-state laser. A 523.5nm DPSS laser is a laser that emits light at a wavelength of 523.5nm. It is a green laser that is used in a wide range of applications such as laboratory and industrial applications. The power output of this laser adjustable ranges from 1mW to 50mW. The spot mode is TEM00, the beam quality is very good. Both 523.5nm and 532nm are green DPSS lasers. The light spots are all in TEM00 mode . 532nm is the most common green laser. Today we will provide a detailed introduction to the 523.5nm laser. Please watch the video below. Compared with 532nm laser, 523.5nm laser has narrower line width, better optical performance and higher stability.  The rotary button on the power supply can adjust the working current, thereby adjusting the output power. 523.5nm 50mW dpss laser spot. 532nm 1W green laser beam. 532nm 10W high power dpss laser strong green laser beam.

 The one shown in our laboratory today is a 1550nm infrared single-mode fiber coupled laser. This is a desktop laser, and the output power can be adjusted directly through the buttons on the panel. The output power is adjustable with an adjustment range of 0.5~5W. The adjustment accuracy is 1mW. The laser can also be controlled through software, and the communication interface is RS232. 1550nm is infrared invisible light, and the light spot can be observed with an infrared sensor plate. What is configured here is single-mode fiber, and polarization-maintaining fiber can be customized. The Line-width here is 3.7 MHz, and the line width of 1MHz can be customized.  This laser adopts DFB type laser chip , and cooperates with high-power gain optical path module to realize single-mode fiber output of single-wavelength high-power laser. The professionally designed drive and temperature control circuit control ensures the safe and stable operation of the laser, and the spectrum and...

 This time we tested a 395nm 2000mW ultraviolet laser. As can be seen from the video, this is a fiber optic coupling device , which is a multi-mode fiber and the fiber is pluggable. The coupling optical fiber can be customized. The one used here is 100μm, 2m in length, and the interface is FC/PC. There is a buckle on the interface. When installing the optical fiber, insert the optical fiber into the buckle and tighten it. This is 395nm UV laser source system. The laser module with radiator on the bottom and the radiator includes 2 cooling fans. When the laser is working, the operating current is displayed on the laser power supply, and the laser output power can be adjusted by rotating the button. 395nm is a near-ultraviolet laser, and a weak blue-violet light spot can be seen on the light shielding plate.