To solve the problem. The research team adopted a completely new structural design. The quantum cascade laser pointer is used to form a “standing wave” and add cracks in the standing wave so that the terahertz laser can rush out of the waveguide and coincide with the band in the opposite direction to increase the laser intensity. The device successfully directed 80% of the laser intensity in the right direction. At the same time, the design also solves the problem of laser synthesis loss caused by traditional mirrors, which is very important for the improvement of terahertz laser efficiency.
Using this design further enhances the terahertz laser power, but some parts are still wasted. In the future, the overall performance of the laser beam needs to be improved to obtain a higher-quality laser beam. High-precision spectroscopy: atoms, small molecules, biological macromolecules, solid and liquid materials, etc., have colorful and diversified energy levels, reflecting the movement of materials such as electronic motion, atomic vibration, and molecular rotation. Their energy scales vary widely. , As large as a few electron volts, as small as a few millielectron volts, the corresponding laser wavelength is ultraviolet to far infrared band. Various laser spectroscopy methods and techniques (such as fluorescence spectroscopy, Raman spectroscopy, photoluminescence spectroscopy, infrared spectroscopy, non-linear spectroscopy, etc.) are often used to detect the movement patterns of these substances.
The center wavelength of the white light laser can be in ultraviolet, visible, near infrared and mid-infrared. It can be in multiple bands and each covers a wide super-continuous band. Therefore, each white light green laser pointer can be used to achieve the microscopic Multi-modal detection of physical and chemical processes and material properties to obtain rich and diverse information, so as to have an in-depth and detailed understanding and understanding of the microscopic motion state.