940nm Fiber coupled diode laser with 20W output power
Product Features:
The overall research and development of 940nm-20W fiber laser pump source diode lasers is based on a variety of coupling technology solutions. A variety of coupling technologies can control power, brightness, and wavelength to meet the customized product needs of different customers.
The production process of this product uses a large number of automated equipment to ensure the consistency of batch product performance; after nearly 20 years of accumulated production experience by professional and technical personnel, our standardized quality control of each production raw material can ensure the long-term reliability of the product ;
Main Features
Wavelength：940nm
Output power: 20W
Fiber core diameter: 105μm
Optical fiber numerical aperture：0.22
Feedback protection: 1400nm-1600nm
Instructions for use
- Please connect pins to wires by solder instead of using socket when operation current is higher than 6A.
- Soldering point should be close to the middle of the pins. Soldering temperature should be lower than 260℃ and time shorter than 10 second.
- Make sure the fiber output end is properly cleaned before operation of laser. Follow safety protocols to avoid injury when handling and cutting the fiber.
- Use constant current power supply to avoid surge current during operation.
- Laser diode must be used according to the specifications.
- Laser diode must work with good cooling.
PRODUCT PARAMETERS
| Specifications (25°C) | Symbol | Unit | Minimum | Typical | Maximum | |
| Optical Data(1) | CW OutputPower | Po | w | 20 | - | - |
| Center Wavelength | λc | nm | 940 ±3 | |||
| Spectral Width(FWHM) | △λ | nm | - | 3 | 6 | |
| Wavelength Shift with Temperature | △λ/△T | nm/°C | - | 0.3 | - | |
| Wavelength Shift with Current | △λ/△A | nm/A | - | 0.6 | - | |
| Electrical Data | Electrical-to-Optical Efficiency | PE | % | - | 52 | - |
| Operating Current | Iop | A | - | 12 | 13 | |
| Threshold Current | Ith | A | - | 1.2 | - | |
| Operating Voltage | Vop | V | - | 3.2 | 3.6 | |
| Slope Efficiency | η | W/A | - | 1.8 | - | |
| Fiber Data | Core Diameter | Dcore | μm | - | 105 | - |
| Cladding Diameter | Ddad | μm | - | 125 | - | |
| Numeric Aperture | NA | - | - | 0.22 | - | |
| Fiber Length | Lf | m | - | 1 | - | |
| Fiber Loose Tubing Diameter | - | mm | 0.9 | |||
| Minimum Bending Radius | - | mm | 50 | - | - | |
| Fiber Termination | - | - | None | |||
| Feedback Isolation | Wavelength Range | - | nm | 1400-1600 | ||
| Isolation | - | dB | - | 30 | - | |
| Others | ESD | Vesd | V | - | - | 500 |
| Storage Temperature⑵ | Tst | °C | -20 | - | 70 | |
| Lead Soldering Temp | Tls | °C | - | - | 260 | |
| Lead Soldering Time | t | sec | - | - | 10 | |
| Operating Case Temperature(3) | Top | °C | 15 | - | 35 | |
| Relative Humidity | RH | % | 15 | - | 75 | |
(1) Data measured under operation output at 20W@25°C.
(2) A non-condensing environment is required for operation and storage.
(3) Operating temperature defined by the package case. Acceptable operating range is 15°C~35°C, but performance may vary.
