Biomaterial Database

Quasi-phase-matching for third harmonic generation in noble gases employing ultrasound. 2012

U K Sapaev, and I Babushkin, and J Herrmann

Max-Born-Institute for Nonlinear optics and Fast Spectroscopy, Max-Born-Str 2a, Berlin D-12489, Germany.

We study a novel method of quasi-phase-matching for third harmonic generation in a gas cell using the periodic modulation of the gas pressure and thus of the third order nonlinear coefficient in the axial direction created by an ultrasound wave. Using a comprehensive numerical model we describe the quasi-phase matched third harmonic generation of UV (at 266 nm) and VUV pulses (at 133 nm) by using pump pulses at 800 nm and 400 nm, respectively, with pulse energy in the range from 3 mJ to 1 J. In addition, using chirped pump pulses, the generation of sub-20-fs VUV pulses without the necessity for an external chirp compensation is predicted.

UI	MeSH Term	Description	Entries
D008956	Models, Chemical	Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.	Chemical Models,Chemical Model,Model, Chemical
D011829	Radiation Dosage	The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).	Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D003198	Computer Simulation	Computer-based representation of physical systems and phenomena such as chemical processes.	Computational Modeling,Computational Modelling,Computer Models,In silico Modeling,In silico Models,In silico Simulation,Models, Computer,Computerized Models,Computer Model,Computer Simulations,Computerized Model,In silico Model,Model, Computer,Model, Computerized,Model, In silico,Modeling, Computational,Modeling, In silico,Modelling, Computational,Simulation, Computer,Simulation, In silico,Simulations, Computer
D005741	Noble Gases	Elements that constitute group 18 (formerly the zero group) of the periodic table. They are gases that generally do not react chemically.	Gases, Inert,Gases, Rare,Rare Gases,Group 18 Elements,Elements, Group 18,Gases, Noble,Inert Gases
D013010	Sonication	The application of high intensity ultrasound to liquids.	Sonications
D019220	High-Energy Shock Waves	High-amplitude compression waves, across which density, pressure, and particle velocity change drastically. The mechanical force from these shock waves can be used for mechanically disrupting tissues and deposits.	HESW,Shock Waves, High-Energy,Shockwaves, Ultrasonic,High Energy Shock Waves,Shock Waves, Ultrasonic,High-Energy Shock Wave,Shock Wave, High-Energy,Shock Wave, Ultrasonic,Shock Waves, High Energy,Shockwave, Ultrasonic,Ultrasonic Shock Wave,Ultrasonic Shock Waves,Ultrasonic Shockwave,Ultrasonic Shockwaves,Wave, High-Energy Shock,Wave, Ultrasonic Shock,Waves, High-Energy Shock,Waves, Ultrasonic Shock