Dichroic Beam Splitter and Fluorescence Wave Shift in Zemax
Hello, this is an example of fluorescence using a dichroic beam splitter in Zemax. In this example, the fluorescence model involves an excitation wavelength of 450 nm and an emission wavelength of 650 nm. The light is transmitted into a box scatter and then directed into a dichroic beam splitter, which transmits 650 nm and reflects 450 nm.
Key Highlights of the Example
- Critical Object: Object 2 is backscattered. Instead of using a model with no scattering, we apply angle scattering based on the mean path between scatter events, set to 0.5 mm.
- Angle of Scattering: The scattering angle is ±10 degrees, meaning the angle from the backscatter is ±10 degrees.
- Beam Splitter: A 45-degree placed beam splitter transmits red light and reflects blue light.
Wave Shift Definition
We define the wave shift using the syntax 1, 2, 1, where:
- Wavelength 1 is 450 nm (input).
- Wavelength 2 is 650 nm (output).
- The probability is 1, indicating 100% of the light is transmitted in the desired direction.
Modeling Considerations
When modeling, ensure that all incident light is either split or scattered correctly. If the "split" option is not selected, the light will not be transmitted in the reflection direction. Similarly, if unchecked, light will not be transmitted into the transmission path.
Conclusion
To accurately demonstrate the transmitted and reflected light using the dichroic beam splitter, all properties must be correctly set up in the model. This ensures the model's accuracy and effectiveness.
Thank you for your attention.
Hello, this is the fluorescence example with a dichroic beam splitter in Zemax.
In this example, the fluorescence model has an excitation wavelength of 450 and an emission wavelength of 650. The light is transmitted into a box scatter and then into a dichroic beam splitter, which transmits 650 and reflects 450. I will touch on some highlights of this example.
The most critical object is Object 2, which is backscattered. Instead of making the model none, we set the angle scattering of the mean path between scatter events to 0.5 millimeters.
The angle of scattering is 10 plus or minus 10. This is a 45-degree beam splitter, which transmits red light and reflects blue light. The wave shift is defined as 1 (in wavelength, out wavelength). The probability is 1, meaning 100% of the light is transmitted in the direction specified.
When modeling this, we need to ensure that all light or incident light is split and scattered. In terms of showing the whole transmitted and reflected dichroic beam splitter, we need to ensure that every property is correct at the model setup. Thank you.
