Abstract
Major space remote sensing and detection activities like distributed reconfigurable satellite system in this century will substantially increase the demand for laser power. A ground verification experiment of the high power density space laser energy transmission system is designed to study the key technologies of space laser energy transmission and improve the transmission efficiency. The key parameters like the output characteristics and conversion efficiency of GaAs cells to different wavelengths of laser are calculated and measured. The relationship between the laser intensity, wavelength and transmission efficiency is analyzed. The experimental results show that: λ793 nm laser for the transmission medium, 62 500 W/m2 for the power density, GaAs cells' laser to electric conversion efficiency is up to 45%; the whole system's electric-laser-electric transmission efficiency is 16.6%. The experiment verifies the feasibility of efficient laser energy transmission.
| Original language | English |
|---|---|
| Pages (from-to) | 15-19 |
| Number of pages | 5 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 22 |
| Issue number | SUPPL.1 |
| Publication status | Published - 2013 |
Keywords
- GaAs cell
- High density
- Laser to electric conversion
- Optoelectronics
- Space laser energy transmission