Sample interview questions: What are some common techniques for achieving tunable laser output in the x-ray range?
Sample answer:
Common Techniques for Achieving Tunable Laser Output in the X-ray Range:
-
X-ray Free Electron Laser (XFEL): This technique utilizes an electron beam accelerated in a linear accelerator and passed through a series of periodic magnets. The electrons produce X-rays through the process of synchrotron radiation, and the output wavelength can be tuned by adjusting the electron energy or the undulator magnet parameters.
-
High-Harmonic Generation (HHG): This nonlinear process involves focusing an intense laser pulse onto a gas or plasma. The interaction generates harmonics of the fundamental laser wavelength, extending into the X-ray range. The wavelength can be tuned by adjusting the laser intensity and the type of gas or plasma used.
-
Plasma-based X-ray Laser: This technique utilizes a plasma as the gain medium. When the plasma is irradiated with a short-wavelength laser pulse, it becomes ionized and inverted, leading to amplification of the laser light and X-ray emission. The wavelength can be tuned by varying the plasma density and temperature.
-
Atomic Inner-Shell Laser (AILS): This approach involves exciting an atomic inner shell with a high-power lase… Read full answer