Rectenna Solar Cells by Garret Moddel & Sachit Grover

Author:Garret Moddel & Sachit Grover
Language: eng
Format: epub
Publisher: Springer New York, New York, NY

9.4.2 Infrared Measurements

In preparation for the IR measurements, the antenna-coupled MOM diodes were wire bonded to a 44-pin chip carrier. The chip carrier is mounted to a socket that allows access to all of the 44 pins for further electrical and optical measurements. These wire-bonded devices are mounted on a stage with six degrees of freedom.

A linearly polarized CO2 laser is used as the IR source. It is tuned to the 10P16 emission line that corresponds to a wavelength of 10.55 μm. Although the laser is linearly polarized with an extinction ratio of 1:50, we used a polarizer to further improve the linearly polarized state of the laser beam to an extinction ratio of 1:175. A mechanical chopper is used to square-wave modulate the laser beam up to 4 kHz. A schematic of the IR measurement setup is shown in Fig. 9.9.

Fig. 9.9Sketch of the IR measurement setup showing the optical and mechanical components [14]

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