High-Power High-Efficiency Laser Power Transmission at 100 m Using Optimized Multi-Cell GaAs Converter

A high-power high-efficiency laser power transmission system at 100 m based on an optimized multi-cell GaAs converter capable of supplying 9.7 W of electricity is demonstrated. An I–V testing system integrated with a data acquisition circuit and an analysis software is designed to measure the efficiency and the I–V characteristics of the laser power converter (LPC). The dependencies of the converter's efficiency with respect to wavelength, laser intensity and temperature are analyzed. A diode laser with 793 nm of wavelength and 24 W of power is used to test the LPC and the software. The maximum efficiency of the LPC is 48.4% at an input laser power of 8 W at room temperature. When the input laser power is 24 W (laser intensity of 60000 W/m2), the efficiency is 40.4% and the output voltage is 4 V. The overall efficiency from electricity to electricity is 11.6%.

[1]  Carlos Algora,et al.  One‐watt fiber‐based power‐by‐light system for satellite applications , 2012 .

[2]  C. Algora,et al.  The influence of monolithic series connection on the efficiency of GaAs photovoltaic converters for monochromatic illumination , 2001 .

[3]  Daniel Feuermann,et al.  Photovoltaic characterization of concentrator solar cells by localized irradiation , 2006 .

[4]  张海洋 Zhang Haiyang,et al.  Experiment of Space Laser Energy Transmission and Conversion with High Efficiency , 2013 .

[5]  M. Cardona,et al.  Interband critical points of GaAs and their temperature dependence. , 1987, Physical review. B, Condensed matter.

[6]  G. Janssen,et al.  Optimization of Metal Coverage on the Emitter in n-Type Interdigitated Back Contact Solar Cells Using a PC2D Simulation , 2013 .

[7]  Carlos Algora,et al.  A GaAs solar cell with an efficiency of 26.2% at 1000 suns and 25.0% at 2000 suns , 2001 .

[8]  Jayanta Mukherjee,et al.  Efficiency limits of laser power converters for optical power transfer applications , 2013 .

[9]  John C. C. Fan,et al.  Theoretical temperature dependence of solar cell parameters , 1986 .

[10]  Yuanyuan Wu,et al.  High Concentration InGaN/GaN Multi-Quantum Well Solar Cells with a Peak Open-Circuit Voltage of 2.45 V , 2012 .

[12]  Brian Corbett,et al.  Theoretical performance of multi-junction solar cells combining III-V and Si materials. , 2012, Optics express.

[13]  Characteristics of InGaN-based concentrator solar cells operating under 150X solar concentration. , 2011, Optics express.