VBG is a grating obtained form holographic exposure in a photosensitive glass crystal. The grating has the performance of high damage threshold, low power loss, narrow line width, and good temperature stability. The laser formed by the built-in VBG grating has extremely narrow linewidth, accurate central wavelength and extremely high wavelength stability. This kind of LD has a long lifetime, good beam quality, no polarization dependence, and small size for easy operation. It is suitable for very narrow linewidth laser applications such as Raman light source.
Application: Raman spectroscopy, spectral remote sensing, military medicine, sensing equipment, etc.
| 内置VBG前后的激光器性能参数比较 |
| 内置VBG |
FWHM(nm) |
中心波长(nm) |
温度漂移(nm/k) |
功率输出量 |
| × |
3-6 |
±3 |
0.3 |
100% |
| √ |
0.2-0.3 |
±0.5 |
0.01 |
>80% |
