Observation of backward high-harmonic emission from solids
Here, we experimentally demonstrate backward emission of high-harmonics of a near-infrared laser from MgO and Si crystals in the direction of specular reflection. We show that the variation of the high-harmonic power with the angle of incidence can be predicted with nonlinear reflection coefficients derived originally for perturbative nonlinearities. A comparison of transmission and reflection geometries suggests that backward-propagating high-harmonics are an excellent reference to study nonlinear propagation of intense light in solids. Backward emission will enable phase matching of the high-harmonic beam and the integration of the functionalities of extended gas-phase high-harmonic beamlines into a single optical element. The potential to achieve phase matching paves the way to solid-state based high-harmonic sources with higher flux than the best transmission-based sources, where high-harmonics are strongly absorbed by the crystal itself.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- Early Career Research Program; AC02-76SF00515; FA9550-14-1-0108
- OSTI ID:
- 1435882
- Alternate ID(s):
- OSTI ID: 1458536
- Journal Information:
- Optics Express, Journal Name: Optics Express Vol. 26 Journal Issue: 9; ISSN 1094-4087
- Publisher:
- Optical Society of AmericaCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Interferometry of dipole phase in high harmonics from solids
|
journal | December 2018 |
High-harmonic generation from solids
|
journal | November 2018 |
High-harmonic generation in solids driven by counter-propagating pulses
|
journal | January 2019 |
Similar Records
Disentangling interface and bulk contributions to high-harmonic emission from solids
High concentration of ultrafine particles in the Amazon free troposphere produced by organic new particle formation