The K976BNERN-530.0WN0N-20022F20EFF is a high-power, wavelength-locked fiber coupled semiconductor laser developed by BWT. It delivers a minimum output power of 530W at a center wavelength of 976±1nm through a 200μm core / 0.22NA multimode fiber with an FC bare ferrule connector. Featuring a narrow spectral width of 0.7nm (FWHM), 50% typical power conversion efficiency and built-in anti-reflection protection over 1020~1200nm with 30dB isolation, this module is specifically designed as a reliable, stable pump source for fiber lasers. The laser operates at a typical current of 26.0A and voltage of 42.0V, with a wavelength temperature coefficient of only 0.02nm/°C, ensuring excellent wavelength stability. It is housed in a compact 172×70×21mm package with 4 mounting holes and 2 electrode pins, and requires base plate temperature control within 23~27°C.
| Parameter | Value |
| Power Conversion Efficiency | Typ. 50% |
| Fiber Core Diameter | 200μm |
| Fiber Length | 2m |
| Fiber Jacket | 0.9mm |
| Bending Radius | ≥88mm |
| Fiber Connector | FC Bare Ferrule |
| Anti-reflection Band | 1020~1200nm |
| ESD | ≤500V |
| Soldering Time | ≤10s |
| 90% Energy Wavelength Range | 974.5~977.5nm |
| Outline Dimensions | 172×70×21mm |
| Mounting Holes | 4×∅3.4mm |
| Electrode Pins | 2×∅2mm |
| Pin Assignment | Pin 1: Laser (+); Pin 2: Laser (-) |
1. Pump source for fiber lasers 2. Scientific research
1. Wavelength-locked output at 976±1nm with excellent spectral stability 2. High output power of 530W delivered from a 200μm fiber core 3. Fiber numerical aperture of 0.22NA 4. Built-in anti-reflection function over 1020~1200nm with 30dB isolation, protecting the module from back-reflected light of fiber lasers 5. High power conversion efficiency of 50% typical 6. Narrow spectral width of 0.7nm (FWHM), with 90% of energy concentrated within 974.5~977.5nm 7. Low wavelength drift of 0.02nm/°C and 0.03nm/A 8. Compact 172×70×21mm package with FC bare ferrule fiber output
BWT Photonics was founded in 2003. With the mission of "Let the dream drive the light", the vision of becoming a "Global Leader In Laser Solutions", and the value of "Outstanding innovation", the company provides semiconductor, fiber, and ultrafast laser products and solutions to global customers.
Since its establishment, BWT has always pursued continuous innovation and adhered to independently controllable advanced processes and technologies. To this end, with its Beijing headquarters as the core, BWT has established multiple production and R&D centers in Jiangsu and Shenzhen, and invested in building an intelligent and digital production base in Tianjin. In order to create world-class technical strength and product quality, BWT established a German subsidiary in 2020, taking a solid step towards the internationalization of R&D, production, and technological innovation.
BWT products are sold in more than 60 countries worldwide, with applications in many fields such as industry, medical, commercial, scientific research, and information, bringing new changes to industry development and customer value enhancement.