Henry Kapteyn

Henry C. Kapteyn
Born	1963 (1963) Chicago suburbs, Illinois, U.S.
Alma mater	Harvey Mudd College (BS, 1982) Princeton University (MS, 1984) University of California, Berkeley (PhD, 1989)
Known for	Femtosecond lasers, Tabletop X-ray lasers, High-harmonic generation
Awards	Member, United States National Academy of Sciences Benjamin Franklin Medal in Physics (2021) Willis E. Lamb Award for Laser Science and Quantum Optics (2012) Arthur L. Schawlow Prize in Laser Science (2010) R. W. Wood Prize (2010) Ahmed Zewail Award in Ultrafast Science and Technology (2009) Adolph Lomb Medal (1993)
Scientific career
Fields	Physics, Ultrafast Lasers, Coherent X-ray Science
Institutions	Washington State University (1990–1996) University of Michigan (1996–1999) University of Colorado Boulder (1999–present) JILA (NIST/University of Colorado)

Henry C. Kapteyn (born 1963) is an American physicist and professor at the University of Colorado Boulder. He is a Fellow of JILA, a joint institute of the University of Colorado and the National Institute of Standards and Technology (NIST). Kapteyn is known for his work in ultrafast optical science, particularly the development of femtosecond lasers and tabletop coherent X-ray sources. ^{[1] [2] [3]} His research focuses on ultrafast laser technology, dynamics in molecular and materials systems, and coherent X-ray generation. ^[2] He is the co-founder of KMLabs, a company specializing in ultrafast laser systems. ^{[4] [5]}

Early life and education

Kapteyn was born in 1963 in the suburbs of Chicago, Illinois, to parents who were post-World War II immigrants from the Netherlands. ^[6]

He earned his Bachelor of Science in physics from Harvey Mudd College in 1982, followed by a Master of Science from Princeton University in 1984. He completed his Ph.D. in physics at the University of California, Berkeley in 1989, where he began working with lasers. ^{[4] [6]}

Career

After his Ph.D., Kapteyn held faculty positions at Washington State University (1990–1996) and the University of Michigan (1996–1999) before joining the University of Colorado Boulder in 1999 as a Professor of Physics and a Fellow of JILA. ^{[1] [3] [7]}

In 1994, he co-founded KMLabs with his wife and collaborator, Margaret Murnane. ^[8] The company commercializes ultrafast laser technologies developed in their research and has received investment from Intel Capital. ^{[4] [9]}

Kapteyn has collaborated extensively with Murnane on studies in femtosecond lasers and X-ray generation. ^[4]

Research

Kapteyn's research involves developing tabletop-scale laser technology for coherent X-rays, ultrafast dynamics in molecular and materials systems, and high-harmonic generation. ^{[2] [10]} Contributions include techniques for generating coherent X-rays using femtosecond lasers, enabling studies at short length and time scales. ^[4]

Awards

Kapteyn is a member of the United States National Academy of Sciences and a Fellow of the American Physical Society, Optica, and American Association for the Advancement of Science. ^{[4] [3]}

• Benjamin Franklin Medal in Physics (2021, shared with Margaret Murnane) ^[6]
• Willis E. Lamb Award for Laser Science and Quantum Optics (2012) ^[11]
• Arthur L. Schawlow Prize in Laser Science (2010) ^{[12] [3]}
• R. W. Wood Prize (2010) ^[3]
• Ahmed Zewail Award in Ultrafast Science and Technology (2009) ^[3]
• Adolph Lomb Medal (1993) ^{[4] [3]}

Publications

• Rundquist, A.; Durfee, C. G.; Chang, Z.; Herne, C.; Backus, S.; Murnane, M. M.; Kapteyn, H. C. (1998). "Phase-matched generation of coherent soft X-rays". Science. 280 (5368): 1412–1415. arXiv: 2403.19636 . doi:10.1126/science.280.5368.1412.
• Chang, Z.; Rundquist, A.; Wang, H.; Murnane, M. M.; Kapteyn, H. C. (1997). "Generation of Coherent Soft X Rays at 2.7 nm Using High Harmonics". Physical Review Letters. 79 (16): 2967. doi:10.1103/PhysRevLett.79.2967.
• Backus, S.; Durfee, C. G.; Murnane, M. M.; Kapteyn, H. C. (1998). "High power ultrafast lasers". Review of Scientific Instruments. 69 (3): 1207–1223. doi:10.1063/1.1148795. hdl: 2027.42/70759 .
• Bartels, R. A.; Backus, S.; Zeek, E.; Misoguti, L.; Vdovin, G.; Christov, I. P.; Murnane, M. M.; Kapteyn, H. C. (2000). "Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays". Nature. 406 (6792): 164–166. arXiv: 2404.01324 . doi:10.1038/35018029.
• Christov, I. P.; Murnane, M. M.; Kapteyn, H. C. (1997). "High-Harmonic Generation of Attosecond Pulses in the "Single-Cycle" Regime". Physical Review Letters. 78 (7): 1251. doi:10.1103/PhysRevLett.78.1251.
• Tien, A.-C.; Backus, S.; Kapteyn, H.; Murnane, M.; Mourou, G. (1999). "Short-Pulse Laser Damage in Transparent Materials as a Function of Pulse Duration". Physical Review Letters. 82 (19): 3883. doi:10.1103/PhysRevLett.82.3883.
• Popmintchev, T.; Chen, M.-C.; Arpin, P.; Murnane, M. M.; Kapteyn, H. C. (2010). "The attosecond nonlinear optics of bright coherent X-ray generation". Nature Photonics. 4 (12): 822–832. doi:10.1038/nphoton.2010.256.
• Asaki, M. T.; Huang, C.-P.; Garvey, D.; Zhou, J.; Kapteyn, H. C.; Murnane, M. M. (1993). "Generation of 11-fs pulses from a self-mode-locked Ti:sapphire laser". Optics Letters. 18 (12): 977–979. doi:10.1364/ol.18.000977.
• Siemens, M. E.; Li, Q.; Yang, R.; Nelson, K. A.; Anderson, E. H.; Murnane, M. M.; Kapteyn, H. C. (2010). "Quasi-ballistic thermal transport from nanoscale interfaces observed using ultrafast coherent soft X-ray beams". Nature Materials. 9 (1): 26–30. doi:10.1038/nmat2568.
• Murnane, M. M.; Kapteyn, H. C.; Rosen, M. D.; Falcone, R. W. (1991). "Ultrafast X-ray Pulses from Laser-Produced Plasmas". Science. 251 (4993): 531–536. doi:10.1126/science.251.4993.531.

References

1. "Henry C. Kapteyn". jila.colorado.edu. Retrieved 2026-02-15.
2. "Henry Kapteyn". colorado.edu. Retrieved 2026-02-15.
3. "Henry C Kapteyn". www.optica.org. Retrieved 2026-02-15.
4. "Founders and Leadership Team - KMLabs". kmlabs.com. Retrieved 2026-02-15.
5. "Home". www.kmlabs.com. Retrieved 2026-02-15.
6. "Henry C. Kapteyn - The Franklin Institute". fi.edu. Retrieved 2026-02-15.
7. "Henry Kapteyn – NAS - National Academy of Sciences". nasonline.org. Retrieved 2026-02-15.
8. "KMLabs Founder & CEO Henry C. Kapteyn, Interviewed on CCTV". kmlabs.com. Retrieved 2026-02-15.
9. "Intel backs KMLabs' ultrafast laser development". optics.org. November 4, 2015. Retrieved 2026-02-15.
10. "Henry C. Kapteyn: Physics H-index & Awards - Academic Profile". research.com. Retrieved 2026-02-15.
11. "The 2012 Willis E. Lamb Award - Henry C. Kapteyn". www.lambaward.com. Retrieved 2026-02-15.
12. Talbott, Clint (February 12, 2010). "Ultra-fast laser research wins top prize". www.colorado.edu. Retrieved 2026-02-15.