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Research interests
Research interests
To explore the world, people use their eyes and hands to see and to manipulate the objects around them. To see the nano-world and ultrafast electron dynamics, the development of new tools is highly desired. Currently, I focus my research on ultrafast laser technology, and table-top X-ray light source based on high harmonic generation. Because X-ray has very short wavelength, it can easily penetrate thick samples and sense small features. Furthermore, due to lots of element absorption edges between EUV and soft X-ray regime of the spectrum, X-ray can easily sense chemical elements and figure out their states. Huge progresses have been done in recent years during my research in JILA and NTHU. This new accessible and reliable attosecond light source makes it possible to capture the attosecond motion of electrons in a broader range of atoms, molecules, liquids, and materials.
為了探索這個世界，人們用眼睛來看，用雙手來操控周圍的物體。而要觀察奈米世界和超快電子動態，開發新的工具是非常必要的。目前，我們的研究重點在於超快雷射技術，以及基於高次諧波產生的桌上型X-ray光源。由於X-ray具有非常短的波長，它能輕易穿透較厚的樣品並探測微小的結構。此外，由於在EUV到soft X-ray範圍的光譜中存在許多元素的吸收光譜，X-ray能夠輕易感測化學元素並解析其狀態。 在我於JILA和清華大學的研究中，這些年來取得了巨大的進展。這種新型且可靠的阿秒光源使得在更廣泛的原子、分子、液體和材料中捕捉電子的阿秒運動成為可能。
NEWS
2024年9月6日
位於捷克的 ELI 蒞臨分享和參訪實驗室。
EXTREME LIGHT FOR EXCELLENT SCIENCE
Research topics
Ultrafast and high-power laser science
Ultrafast and high-power laser science
Ultrafast and high-power laser science uses lasers that emit extremely short pulses and high power to study matter. With pulse durations in femtoseconds or picoseconds, these lasers deliver intense energy in very short times, achieving high power densities. This technology is used in materials science, biomedical research, and chemical dynamics for precise control and high-resolution study of transient processes.
超快高功率雷射科學利用發射極短脈衝和高功率的雷射來研究物質的行為和性質。這些雷射的脈衝持續時間通常在飛秒或皮秒級，能在極短時間內傳遞強烈能量，實現高功率密度。這項技術廣泛應用於材料科學、生物醫學研究和化學反應動力學，能夠精確控制和高分辨率地研究瞬態過程。
Coherent and Ultrafast EUV generation
Coherent and Ultrafast EUV generation
Coherent and ultrafast extreme ultraviolet (EUV) generation involves producing EUV radiation that is both phase-coherent and extremely brief in duration. This process is typically achieved using high-harmonic generation (HHG), where a high-intensity femtosecond laser pulse interacts with a gas medium to generate EUV light.
相干超快極紫外光（EUV）的產生涉及生成具有相位相干性且持續時間極短的EUV輻射。這一過程通常通過高次諧波產生（HHG）來實現，即高強度飛秒雷射脈衝與氣體介質相互作用，生成EUV光。
Quantum dynamics
Quantum dynamics
Quantum dynamics refers to the study of how quantum systems evolve over time. It deals with the behavior and interaction of particles and systems governed by the principles of quantum mechanics.
量子動力學是指研究量子系統隨時間演變的過程。它涉及受量子力學原理支配的粒子和系統的行為及相互作用。
Hire Students and Postdocs!
Our lab currently looks for undergraduate, graduate students and postdocs who is interested in femtosecond IR and attosecond EUV coherent sources and their applicacions on resolving ultrafast dynamics and nano-imaging. Welcome to contact with Prof. Chen (mingchang.chen@gmail.com) for more details and visiting our Frontier Labs in EECS210.
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