The 974/976 nm Pump Laser from DK Photonics is a high-performance single-wavelength source engineered specifically for modern fiber laser and fiber amplifier systems. Built around a butterfly-packaged semiconductor laser diode with fiber Bragg grating (FBG) wavelength locking, this pump module delivers excellent power stability and spectral purity at the critical 974 nm or 976 nm bands widely used to excite ytterbium-doped fibers. With available output powers up to 1000 mW and a choice of single-mode (HI1060) or polarization-maintaining (PM980) fiber pigtails, it offers a flexible and reliable foundation for industrial, research, and test applications requiring stable, narrowband pump light.

Compared with many conventional pump diodes and generic 9xx nm laser modules, this 974/976 nm pump laser is optimized to maintain consistent output under demanding operating conditions. The integrated FBG locking stabilizes the lasing wavelength to 974 ±1 nm or 976 ±1 nm, reducing wavelength drift that can degrade fiber laser efficiency over time or with temperature variations. A professionally designed drive and temperature control system based on a precision TEC ensures that both optical power and spectrum remain within tight tolerance, with short-term power stability better than ±0.02 dB and long-term stability better than ±0.05 dB. This combination of narrow spectral width and excellent stability makes it highly competitive with similar pump modules used in high-end fiber laser architectures.

Available in both compact desktop and space-saving module formats, the 974/976 nm Pump Laser integrates easily into laboratory setups, OEM systems, and production environments. The desktop version supports simple front-panel button control and an internal AC power supply (100–240 V), making it well suited for R&D benches, device prototyping, and flexible test stations. The module version is designed for system integration, powered from a 5 V DC supply and controlled via RS232 (DB9 female interface), allowing remote configuration and monitoring when embedded into larger laser platforms or automated optical test equipment. This dual packaging approach mirrors what is found in advanced pump laser offerings worldwide, giving users the choice between turnkey operation and tightly integrated OEM deployment.

The optical interface is standardized around HI1060 or PM980 fiber, terminated with an FC/APC connector to minimize back-reflections and maintain beam quality. The option of polarization- maintaining fiber is particularly important for applications such as single-polarization fiber lasers, nonlinear optics experiments, and polarization-sensitive amplifiers, where stable polarization is crucial for consistent performance. With output power options of 200 mW, 400 mW, 600 mW, and 1000 mW, system designers can select the appropriate configuration to match the gain requirements of their ytterbium-doped fibers or other active media while avoiding unnecessary thermal load and cost.

Designed to operate over a wide temperature range from -5°C to +55°C and humidity up to 70%, this pump laser is suitable for both controlled laboratory conditions and more demanding industrial environments. The compact mechanical footprint of the module version enables dense packaging in multi-channel fiber laser systems or rack-mounted units, while the desktop unit offers ample front-panel access for quick configuration and diagnostics. Together, these attributes position the DK Photonics 974/976 nm Pump Laser as a robust, efficient, and application-ready solution for fiber laser pumping, fiber amplifier seeding, nonlinear optics research, and precision fiber-optic device testing where stable, high-brightness pump power at 974/976 nm is essential.