Dispersion compensation (pulse broadening/compression) using large chirped fiber Bragg grating is one of the key technologies in ultrafast laser field, which has become an important application direction of large chirped fiber Bragg grating. Raysung can customize CFBGS with various dispersion levels to meet the needs of ultrafast lasers.
Raysung’s ultrafast laser components can achieve high performance broadening, and achieve the ultimate in cost control. Can be customized according to customer requirements, meet the needs of high-performance picosecond laser femtosecond laser, to achieve the perfect unity of performance and cost.
It is specially designed for femtosecond pulse compression. In the CPA system of femtosecond fiber laser, VBG can be used to compress the broadened and enlarged pulse, which can achieve high quality ultra-short pulse compression
For fiber laser, double clad fiber is commonly used, as the fiber core is very small, which will limit just a few laser modes, and therefore can easily achieve high power density; also, by cladding mode pumping, the inner clad structure will allow high power laser diode pumping, which could improve the pumping efficiency, and then achieve high gain in the active fiber.
Currently, a high power fiber laser cavity is usually consisted with a Yb-doped double clad fiber as the active fiber, and a pair of high reflector (HR) and output coupler (OC) fiber bragg gratings, which have the same geometry as the active fiber in order to have good matching.
Based on the Double-Clad FBG writting technique, Raysung developed high power FBG mirrors, specifically for the application of fiber laser. The wavelength matching between HR and OC could be controlled <0.2nm. Also, with particular heat management technique, these FBGs are built to handle as high as KW pumping power, so that they could meet the highest standard of reliability and performance.
Features:
- High efficiency
- Easy integration into OEM systems
- Very low insertion loss
| Parameters | Specifications | ||||
| Center Wavelength¹ | 1010 to 2110nm | ||||
| Reflectivity | 3% (OC) ~ 99.9% (HR) | ||||
| FWHM Bandwidth | 0.2 ~ 4nm | ||||
| HR-OC Wavelength Matching | <0.2nm | ||||
| Fiber Type² | 10/130 | 10/125 | 14/250 | 20/400 | 25/400 |
| Power Handling³ | 5W ~200W | 50W ~300W | 500W ~1500W | 1500W ~3000W | 2000W ~4000W |
| High Power Package Dimension | A. 60mmx12mmx5mm B. 60mmx10mmx5mm | ||||
Note:
1. Please contact us for other wavelengths available.
2. Please contact us for other fiber type available.
3. Pumping laser power.
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