High-harmonic generation (HHG) is a non-linear process during which a target (gas, plasma, solid or liquid sample) is illuminated by an intense laser pulse. Under such conditions, the sample will emit …

Aug 3, 2023 · When an intense laser field interacts with matter in the form of gases 1, 2, liquids 3 or solids 4, an extreme nonlinear process known as high-harmonic generation (HHG) may occur. Within …

Nov 5, 2024 · Experimental evidence shows that high-harmonic generation in semiconductors produces nonclassical states of light, including multimode squeezing and entanglement, opening pathways for …

High harmonic generation is an entirely nonlinear and nonperturbative process. The spectrum of high harmonics is characterized by a fall-off for the few low-order harmonics, followed by an extended …

High harmonic generation (HHG) is a physical effect that occurs when an atomic, molecular, or solid system is placed in a strong driving laser field and emits photons at frequencies of integer multiples …

The mechanism of high harmonic generation is still not understood in detail. It involves the cooperative response of the atomic medium to radiation, at a high order of nonlinearity.

Feb 27, 2025 · Among these, high-harmonic generation stands out as a particularly significant nonlinear optical phenomenon. It occurs when an ultrashort, ultraintense infrared laser interacts with electrons …

Harmonic generation is a nonlinear optical process in which the frequency of laser light is converted into its integer multiples. Harmonics of very high orders are generated from atoms and molecules …

May 29, 2025 · So, what on Earth is High Harmonic Generation? Well, it’s a process where a laser beam, which is basically a concentrated beam of light, hits a material (think of it as a magical crystal), …

Oct 2, 2024 · High-harmonic generation has been driving the development of attosecond science and sources. More recently, high-harmonic generation in solids has been adopted by other communities …