Ultra-fast measurement technology can reveal the origin of green laser pointer pulses Researchers have shown how laser pulses emerge from noise, then scatter and oscillate, and finally achieve a steady state. The sub-picosecond resolution and sub-nanometer resolution are used to measure the time intensity and optical spectrum of the laser, respectively, making the above discovery possible. By recording both the time and spectral characteristics of the pulse, researchers can build an algorithm to retrieve the complete characteristics of the underlying electromagnetic field of the laser.
Researchers at the Tampere University of Technology Institute use synchronous dispersion Fourier transform and time lens measurements to describe the spectral and temporal evolution of ultrashort solitons. They reconstructed the amplitude and phase of the soliton and calculated the corresponding complex eigenvalue spectrum. In the process of reconstructing the new evolution of the electromagnetic field, the research team observed various interactions between dissipative soliton structures caused by noise.
The professor said: “The results provide us with a completely new way to see previously unseen interactions between dissipative solitons in the form of collisions, mergers, or dispersions. These findings demonstrate that real-time measurements can Fast transient dynamics provide new insights. Researchers believe their findings can be used to improve the design and performance of ultrafast pulsed green laser pointers. This is a truly fascinating area of research, and research driven by basic science has May have a real practical impact on future photonic technologies.