Current doctoral research direction
Laser measurement instrument development is my current doctoral research direction. I am developing the optical foundations and entering the group's instrument-development work, while the specific technical branch remains under active evaluation.
This is a living research page. It records current study, project entry and research questions; it does not imply that a laser instrument, optical diagnostic system or doctoral publication has already been completed.
Four branches to understand
| Direction | Scope to explore | Current status |
|---|---|---|
| OPO | Optical parametric oscillator design and nonlinear frequency conversion. | Exploring / preparing; final branch not fixed. |
| CO₂-PLIF | Planar laser-induced fluorescence for optical diagnostics. | Method to study; no completed-system claim. |
| FRS | Filtered Rayleigh scattering diagnostics. | Method to study; no completed-system claim. |
| TOMO-PIV | Tomographic particle image velocimetry. | Method to study; no completed-system claim. |
These names describe candidate directions and methods. They are not a list of technologies already mastered by one researcher.
Optical foundations for instrument development
- Physical optics
Build the common language
Wave optics, interference, diffraction, polarization and the relationship between optical fields and measurement signals.
- Laser physics
Understand the light source
Laser principles, resonators, gain and the behavior of a source in a measurement system.
- Nonlinear optics
Understand frequency conversion
Develop the concepts needed to approach parametric processes and OPO-related work.
- Measurement
Connect optics to data
Consider detector response, signal processing, calibration, uncertainty and the full diagnostic chain.
Reading & learning map
The current starting point is the seventh edition of Yao Qijun’s 《光学教程》. Further study connects physical optics with laser principles, nonlinear optics and optical measurement.
The sequence prioritizes foundations shared by the candidate directions. Reading progress and worked exercises can be added here without presenting planned study as completed expertise.
A practical learning loop
Read the physical argument, work through the mathematics, reproduce a simple calculation, then relate it to an actual instrument or diagnostic question.
Questions for entering the project
- What physical quantity should the instrument measure, at what spatial and temporal scales?
- What source, wavelength range and optical geometry does the measurement require?
- Which part of the system is a research question rather than routine integration?
- What calibration, uncertainty analysis and reference experiment will support the eventual claim?
- How can the optics, electronics and acquisition chain be tested in stages?
Future experiments · planned
Future work may include optical alignment, source characterization, calibration and diagnostic experiments, depending on the selected branch and the group’s project needs.
These are current development objectives. Instrument specifications, experimental results and performance numbers will be added only when the corresponding test records exist.
Current record
Doctoral direction & foundational study
Laser measurement instrument development became the long-term doctoral research direction in September 2026; systematic optical study and project entry are now underway.
No publication, patent, instrument benchmark or completed experimental dataset is claimed here.
A page that can grow with the research
As the branch becomes concrete, this page can connect research questions, apparatus versions, calibration records, experiments and verified outputs. The common structure is a path from method to evidence, rather than a list of future achievements.
