Discussion Overview
The discussion revolves around calculating the output voltage of a photodiode in photovoltaic mode, specifically targeting a voltage range of 5-10V using lasers and photodiodes without the aid of operational amplifiers. Participants explore various factors affecting the output voltage, including wavelength, intensity, and the operational environment of the devices.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant seeks guidance on calculating the output voltage of a photodiode when illuminated by lasers, aiming for a specific voltage range.
- Another participant suggests looking up specific photodiodes, such as the CPC1832N, which has a 10V output, and recommends checking the datasheet for more information.
- A question is raised about whether the output voltage for a given wavelength and power of laser would be close to the open circuit voltage (Voc) of the photodiode.
- One participant expresses uncertainty about how a solar cell would respond to a single wavelength of light, suggesting it may not achieve its full potential compared to exposure to a full spectrum.
- Another participant mentions the importance of finding a laser wavelength that maximizes the photodiode's response and discusses the experimental conditions at cryogenic temperatures.
- Suggestions are made to explore existing products related to power over fiber optics as a potential solution.
Areas of Agreement / Disagreement
Participants express various viewpoints on the behavior of photodiodes and solar cells under specific conditions, with no consensus reached on the exact relationship between laser parameters and output voltage. Uncertainty remains regarding the effectiveness of using a single wavelength and the performance at low temperatures.
Contextual Notes
Participants note limitations in understanding how photodiodes and solar cells perform under specific wavelengths and intensities, particularly in cryogenic environments. There is also mention of the need for spectral response data from manufacturers, which has not been received.
Who May Find This Useful
This discussion may be of interest to individuals working with photodiodes, solar cells, or those involved in optical power applications, particularly in experimental or low-temperature settings.