Accurately manipulate the generation of light sources creates new possibilities for scientific research and engineering applications.
 

Research and Discovery

Assistant Professor Shih-Hsuan Chia from the Institute of Biophotonics, National Yang Ming Chiao Tung University (NYCU), has developed a laser source device that can concurrently adjust the spectral location and bandwidth of pulsed light. This innovation greatly enhances the understanding of the interaction between light and matter and facilitates the practical application of this knowledge. Mr. Chia developed a device measuring approximately 2.5 cm3. The device can individually and continuously adjust the spectral peak and bandwidth by controlling the nonlinear effects (self-phase modulation) of optical fibers. It is the world’s first device to enable the arbitrary, individual, and continuous manipulation of spectral peaks and bandwidth. With this device, scientists can freely adjust the center frequency and bandwidth of short pulsed light sources and achieve pulse widths as short as 14 femtosecond (10−15 seconds).

Limitations and Breakthrough

The application of optical technology in various fields provides numerous advantages. The ability to accurately manipulate the generation of light sources creates new possibilities for scientific research and engineering applications. In particular, a key aspect of this ability is the control of spectral locations and bandwidth. Nevertheless, this capability is limited by the types of luminescent materials that are used. Typically, spectral locations and bandwidth cannot be adjusted freely, and this limits the effect and potential of subsequent applications. This research achievement will have a positive influence on nonlinear spectral analysis and microscopy technology. The research team believes that this breakthrough will assist scientists in conducting more efficient studies of material properties and lead to further advancements in the practical application of light sources.