Hello, When I run a universal plot 1 D in non-sequential mode, why is the curve of NSDD so strange as follows?
Solved
Why the NSDD curve in universal plot 1 D is strange when use non-sequential mode？
Best answer by David.Nguyen
Hi,
At Z Position = 0.0, your Detector Rectangle is basically overlapping with your Source.
Therefore, NSDD returns zero. When you go to negative values, your detector is behind the source, so NSDD continues to return zero. Only with positive values >0 and <10 does NSDD return sensible values, although the detector is between the lenses and the source (which probably doesn’t make sense). The jump that you observe is because the Detector Rectangle goes from not seeing anything (because it is colocated with the source) to a divergent Gaussian beam.
I see that by default, your Detector Rectangle has a Z Position of 106.0. If you want to move about this position, you need to use a Start/Stop value of 96/116 respectively (this is +/-10 around 106):
I hope that makes sense.
Take care,
David
+2Hello,
Any chance you can share this file with us for troubleshooting?
What does the Detector look like at the “strange” positions?
Take care,
David
Hello, David
The following is another file I tested, the merit editor value and the universal plot 1 D is also different. I have attached the file.
+2Hi,
At Z Position = 0.0, your Detector Rectangle is basically overlapping with your Source.
Therefore, NSDD returns zero. When you go to negative values, your detector is behind the source, so NSDD continues to return zero. Only with positive values >0 and <10 does NSDD return sensible values, although the detector is between the lenses and the source (which probably doesn’t make sense). The jump that you observe is because the Detector Rectangle goes from not seeing anything (because it is colocated with the source) to a divergent Gaussian beam.
I see that by default, your Detector Rectangle has a Z Position of 106.0. If you want to move about this position, you need to use a Start/Stop value of 96/116 respectively (this is +/-10 around 106):
I hope that makes sense.
Take care,
David
1 person likes this
Hello, David
Thanks, got it, I misunderstood the meaning of start value.
Lenror
UW Laser Welding Expert
1 person likes this
Reply
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
Need more help?
To Chinese users:
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws ( e.g., Important Data, National Core Data, etc.).
不要提供任何受适用法律，包括中华人民共和国的网络安全和数据安全法限制的信息或数据（如重要数据、国家核心数据等）。