| Abstract Scope |
The needs for sensitively and reliably probing the magnetization dynamics have been increasing in various contexts and especially in novel spintronic and magnonic research, where the spin and magnon dynamics are driven by the state-of-the-art approaches using spin torques, acoustic phonons, and microwave photons. Recent breakthroughs in quantum magnonics also highlight the needs for detecting spatial- and phase-resolved magnetization dynamics adaptable to micro- and nano-scale magnonic devices with synergistic photonic and spin-electronic components on-chip. Here, I will discuss the detection of phase-resolved magnetization dynamics using a 1550 nm laser stroboscope that leverages facile modulation at the GHz frequencies with both amplitude and phase control. Such a continuous-wave modulation capability makes the IR-band optics advantageous for studying magnetization dynamics in complex magnetic systems, such as quantum magnonic hybrids, patterned nanomagnets, etc. The fiber-based optics also allow for a facile integration with simultaneous electrical, thermal, and magnetic measurements. |