NakuLaser Blog

 It's 785nm 350mW Near infrared 0.2nm spectral linewidth laser source . This laser coupled a 100μm fiber. This is a narrow linewidth laser, usually used for laser Raman experiments. Let's check it now. The 785nm narrow-linewidth Raman laser produced by our company has narrow spectral line width and good spectral stability, and it has a wide range of applications in Raman analysis. Provides free optical path and fiber-coupled two kinds of production solutions, which can be matched with Raman probes and corresponding accessories, to fully solve the customer's need to build a hardware part of the Raman spectrometer. The Raman laser has good spectral stability, and the center wavelength remains basically constant under long-term working conditions; the spectral line width is narrow, and it has a very good Raman effect when used as a Raman light source, and is very suitable for pulling. This 785nm raman laser's datasheet .

It's a 532nm 500mW 0.1nm Narrow Linewidth laser . The laser head and laser power supply in one case. It support manual control and software control. When software control is selected, link USB data cable and select 'PC' working mode. Let's check it now.  

1 Introduction As a light source  of fiber laser sensor, narrow linewidth fiber laser has the characteristics of interference to electromagnetic field, safety, small size and remote control. Currently, there are three schemes for obtaining single longitudinal mode narrow linewidth fiber lasers. 1) Non-coherent technology that eliminates spatial hole burning caused by standing wave effect by controlling the polarization state of the encountering light waves in the cavity; 2) adding unpumped doped fiber in the laser cavity to select the frequency and suppressing the saturated absorption of the mode-hopping Body; 3) short cavity fiber laser, including DFB fiber laser and short cavity DBR fiber laser. Comparing the three schemes, it is found that schemes 1 and 2 require the use of multiple polarization controllers, and most of them have annular cavity structures, which are difficult to control, low conversion efficiency, and extremely low output power; while scheme 3 has a simple stru...

Abstract : A high efficient narrow linewidth fiber laser  based on fiber Bragg grating Fabry- Perot( FBG F- P) cavity was demonstrted. The spatial hole burning effect was restrained by fiber Faraday rotator( FR) . Two short FBG F- P cavities as narrow bandw idth filters discriminated and selected the laser longitudinal modes efficiently. Stable single frequency 1550nm laser was acquired. Pumped by two 976nm LD, the fiber laer exhib ited a 11 mW threshold. The 73mW output power was obtained upon the maximum 145mW pump power. The optica-l optical  efficciency was 50% and the slope efficiency was 55% . T he 3 dB linewidth of laser was less than 10 kHz, measured by the delayed sel-f heterodyne method with 10 km mono- mode fiber. T he high power narrow linewidth fiber lasr can be used in high resolution fiber sensor system. 1 Introduction As a  fiber laser sensor source, the narrow linewidth fiber laser has the characteristics of interference to the electromagnetic field,...