•High CW Output Power (600W)
•Efficient Microchannel Cooling
•Fast Axis Collimation (FAC) Included
•High Reliability & Long Lifetime
•Compact Horizantal Array
• Fiber Laser Pumping
• Direct Diode Material Processing
• Solid-State Laser Pumping (DPSSL)
• Scientific Research
• Medical & Aesthetic Systems
• Defence & Aerospace
This horizontal laser diode stack is engineered for easy integration into compact, high-power industrial and scientific laser systems. Its horizontal configuration, consisting of three 200W bars, provides a high-brightness, 600W source at the 940nm wavelength, a crucial wavelength for fiber laser pumping and direct material processing applications.
At the heart of this laser diode stack is a high-efficiency microchannel cooling architecture. This advanced thermal management system ensures low thermal resistance and excellent temperature uniformity across the bars, which is critical for maintaining stable power output, a narrow spectral bandwidth, and achieving a long operational lifetime of the diode stack. With its robust construction and high reliability, this laser diode stack is an ideal building block for demanding OEM applications.
| Specifications E2Y-940D-600C-HO1.1(3×1) | |||||
|---|---|---|---|---|---|
| Parameter | Unit | Min | Typical | Max | |
| Optical Data | Working Mode | – | – | CW | – |
| Central Wavelength | nm | 937 | 940 | 943 | |
| Wavelength Accuracy | nm | – | ±3 | – | |
| Output Power Per Bar | W/bar | – | 200 | – | |
| Number of Bars | pcs | – | 3 | – | |
| Bandwidth (FWHM) | nm | – | 3 | 6 | |
| Fast Axis Divergence with FAC (90% power) | mrad | – | 7 | 10 | |
| Slow Axis Divergence (95% power) | deg | – | 7.5 | 9 | |
| Electrical Data | Threshold Current | A | – | 23 | 28 |
| Operating Current | A | – | 215 | 230 | |
| Operating Voltage per Bar | V/bar | – | 1.6 | 1.8 | |
| Slope Efficiency | W/A | – | 3.3 | 3.5 | |
| Efficiency | % | 55 | 60 | – | |
| Bar Specification | Emitter Width | µm | – | 200±5 | – |
| Emitter Pitch | µm | – | 400±5 | – | |
| Filling Factor | % | – | 50 | – | |
| Others | Pressure | bar | – | <5 | – |
| Flow Rate per Bar | L/min/bar | – | 0.25~0.33 | – | |
| Cooling Water Temperature | °C | 22 | 25 | 28 | |
| Cooling Water Specification | – | Deionized water 2.5±0.5µS/cm, pH-value 5.5-8, filter≤5μm | |||
This horizontal diode stack is designed for OEM applications and can be customized. Parameters like wavelength, bar-to-bar pitch, and mechanical footprint can be adjusted for volume orders. Please contact our engineering team to discuss a custom solution tailored to your system’s requirements.
Ensure the device is mounted on a flat, thermally conductive surface to guarantee efficient heat transfer. When connecting the electrical terminals (P/N), do not exceed the recommended torque of 80 Ncm to avoid damaging the housing.
This is a high-power Class 4 laser device emitting invisible infrared radiation. Avoid eye or skin exposure to direct or scattered radiation. All personnel must wear appropriate laser safety goggles rated for the 940nm wavelength range when the device is active.
To prevent electrochemical corrosion and microchannel clogging, we strictly require deionized water with a conductivity of 2.5±0.5 µS/cm, a pH between 5.5 and 8.0, and filtration particles of ≤5µm.
To ensure uniform heat dissipation across the bars, a flow rate of 0.25–0.33 L/min per bar is required. Maximum water pressure must be maintained at below 5 bar to prevent structural damage to the micro-channel cooler.
A precision, low-ripple constant-current (CC) laser diode driver is mandatory. Because this stack draws high operating current (~215A), we recommend a driver with soft-start functionality and hardware interlocks to prevent catastrophic optical damage (COD) from surge currents.
For suitable power solutions, you can explore our high-current laser diode drivers here.
We recommend a cooling water temperature setpoint of 25°C. While the permissible operating range is 22°C to 28°C, precise temperature regulation is advised to maintain central wavelength stability and bandwidth.
The specifications in the table include Fast Axis Collimation (FAC) with a divergence of 7 mrad. Should your application require further beam shaping or Slow Axis Collimation, please contact our engineering team to discuss custom optical configurations.
Yes, central wavelengths in the 915nm–980nm range can be accommodated for OEM and volume orders. Emitter pitch, bar count, and mechanical mounting points are also highly customizable to suit your system requirements.
Pair your diode with the right driver and temperature controller for stable, reliable performance.
Precise, low-noise current control for optimal diode performance and extended lifetime.
View Drivers
Active thermal management for wavelength stability and consistent output power.
View TEC ControllersWe offer custom laser diode stacks according to your needs, either high-power or low-power versions, specific wavelengths and power-levels. To discuss your custom laser diode needs, you can contact us by sending an email or using the contact form.
