The K878BL9RN-170.0W is an 878.6nm, 170W high-power wavelength-stabilized fiber-coupled diode laser module. It delivers a minimum of 170W continuous output power from a 200μm core, 0.22NA multimode fiber terminated with an HP-SMA905 connector. Wavelength locking ensures a narrow spectral width of 0.5nm (FWHM) and a low wavelength temperature drift of 0.03nm/℃, making it ideal for wavelength-sensitive pumping. The module offers up to 47% electro-optical conversion efficiency, integrated anti-reflection protection (1020-1200nm, 30dB isolation) against back-reflected light, and a compact 80×76×15mm package with a simple two-pin interface. All specifications are measured at 170W output power and 25℃ baseplate temperature under non-condensing conditions.
| Parameter | Value |
| Wavelength Temperature Drift Coefficient | Typ:0.03nm/℃ |
| Brightness (95% Energy NA) | 0.17 |
| Fiber Core Diameter | 200μm |
| Fiber Cladding Diameter | 220μm |
| Fiber Length | 2.0m |
| Fiber Jacket Diameter | 3.0mm |
| Fiber Bend Radius | Min:88mm |
| Fiber Connector | HP-SMA905 |
| Anti-reflection Band | 1020-1200nm |
| Lead Soldering Temperature | Max:260℃ |
| Lead Soldering Time | Max:10sec |
| Operating Temperature (Baseplate) | 20℃~30℃ |
| Pin 1 | Laser (+) |
| Pin 2 | Laser (-) |
| Package Dimensions | 80mm×76mm×15mm |
1. In-band pumping of Nd:YVO4 and other Nd-doped solid-state (DPSS) lasers 2. Pump source for frequency-converted green and UV lasers 3. Medical and aesthetic laser equipment 4. Scientific research and spectroscopy 5. Industrial material processing and laser heating
1. High continuous output power of 170W delivered through a 200μm/0.22NA multimode fiber 2. Wavelength-stabilized design with narrow 0.5nm FWHM spectral width 3. Ultra-low wavelength temperature drift of 0.03nm/℃ for stable pumping 4. High electro-optical conversion efficiency up to 47%, reducing power and cooling demands 5. Built-in anti-reflection protection at 1020-1200nm with 30dB isolation against back-reflected light 6. Standard HP-SMA905 fiber connector with 2.0m fiber and 3.0mm protective jacket 7. Compact and robust package (80×76×15mm) with a simple two-pin electrical interface
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.