SpectroRayTrace

a ray-tracing platform for the Czerny-Turner spectrometer using Matlab.

Origin

This repository is based on Advanced Project lab course in Shenzhen Technology University.

In the third semester, I developed the 2D version.

In the fourth semester, I developed the basic 3D version in just few weeks.

Back then, one task of a competition (全国大学生光电设计竞赛 ) is to measure the concentration of the alcohol in a contactless or non-destructive way.

My friend Zhu majored in B.E. EE invited me to join with him.

Given my previous work, I decided to build an NIR spectrometer to complete it.

Team members:

• Lin Yuanfeng (control)

• Zhu Leixin (readout circuit and data analysis)

• Zhao Annan (me)

We failed in the competition, due to my fault in the structure design plus the system needs appropriate calibration to reach high precision. We should develop a automatic calibration system.

Where to begin

The repository is very messy, sorry for that.

It has been a while since I developed the 2D ray tracing platform, so I have forgot which are the main programs, but the time log may help you to determine.

As for 3D version, it is clearer:

• The EF_1200_pro.m is a static version

  • 1200 means the grating used in it is 1200 linepairs / mm
  • EF means using the Ebert-Fastie structrue
    • 《现代应用光学》by 张以谟
    • The difference between EF and CT is the number of sphere mirror (1 for EF 2 for CT).

• The animation.m is used to make movies.

• myfile.tex is used to generate PDF version, I want to put it in my latex report.

• EF-tools.m analyze the accessible wavelength range of this EF system