Single-shot intense few-cycle pulse interaction with polycrystalline ZnSe

2020 ◽  
Vol 45 (12) ◽  
pp. 3216
Author(s):  
Yingjie Chai ◽  
Xiaoming Yu ◽  
He Cheng ◽  
Andrew Chew ◽  
Zenghu Chang ◽  
...  
Keyword(s):  
Single Shot ◽  
Cycle Pulse ◽  
Pulse Interaction

Single-Shot Few-Cycle Pulse Laser-induced Damage and Ablation of HfO2/SiO2-based Optical Thin Films

2019 ◽  
Author(s):  
Noah Talisa ◽  
Michael Tripepi ◽  
Brandon Harris ◽  
Abdallah AlShafey ◽  
Aaron Davenport ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulse Laser ◽  
Single Shot ◽  
Laser Induced Damage ◽  
Cycle Pulse

A compact platform for efficient generation and single-shot measurement of high-field terahertz wave with a broadband naturally synchronized mid-infrared source

2021 ◽  
Vol 93 (1) ◽  
pp. 10501
Author(s):  
Yingying Ding ◽  
Liwei Song ◽  
Junyu Qian ◽  
Zhe Liu ◽  
Pengfei Wang ◽  
...  
Keyword(s):  
High Field ◽  
Terahertz Wave ◽  
Optical Rectification ◽  
Ultrafast Dynamics ◽  
Single Shot ◽  
Infrared Source ◽  
Crystal Lattices ◽  
Mid Infrared ◽  
Electro Optic ◽  
Cycle Pulse

High-field terahertz (THz) wave is a powerful tool for investigating ultrafast dynamics such as the motion of electrons, the vibration of crystal lattices, the precession of spin, etc. In this letter, we demonstrate the generation of intense single-cycle THz pulses from an organic crystal DSTMS (4-N, N-dimethylamino-4'-N'-methyl–stilbazolium 2,4,6–trimethylbenzenesulfonate) via optical rectification. The generated THz field is characterized by single-shot electro-optic sampling with a linearly chirped probe beam. Meanwhile, the spectrum of the infrared pump is broadened to an octave which supports a 1.9-cycle pulse duration. The proposed scheme displays a sophisticated platform of efficient high-field THz generation, single-shot THz measurement, and a broadband mid-infrared source which is naturally synchronized with the THz pulses.

HEAT PULSE INTERACTION

1972 ◽  
Vol 33 (C4) ◽  
pp. C4-119-C4-122
Author(s):  
M. S. RIBBANDS ◽  
D. V. OSBORNE
Keyword(s):  
Heat Pulse ◽  
Pulse Interaction

Functional stereotactic radiosurgery involving a dedicated linear accelerator and gamma unit: a comparison study

2004 ◽  
pp. 373-380 ◽  
Author(s):  
Timothy D. Solberg ◽  
Steven J. Goetsch ◽  
Michael T. Selch ◽  
William Melega ◽  
Goran Lacan ◽  
...  
Keyword(s):  
Stereotactic Radiosurgery ◽  
Linear Accelerator ◽  
Treatment Plan ◽  
Single Shot ◽  
Submillimeter Range ◽  
Primate Model ◽  
Content Type ◽  
Stereotactic Frame ◽  
Targeting Ability ◽  
Fine Print

Object. The purpose of this work was to investigate the targeting and dosimetric characteristics of a linear accelerator (LINAC) system dedicated for stereotactic radiosurgery compared with those of a commercial gamma knife (GK) unit. Methods. A phantom was rigidly affixed within a Leksell stereotactic frame and axial computerized tomography scans were obtained using an appropriate stereotactic localization device. Treatment plans were performed, film was inserted into a recessed area, and the phantom was positioned and treated according to each treatment plan. In the case of the LINAC system, four 140° arcs, spanning ± 60° of couch rotation, were used. In the case of the GK unit, all 201 sources were left unplugged. Radiation was delivered using 3- and 8-mm LINAC collimators and 4- and 8-mm collimators of the GK unit. Targeting ability was investigated independently on the dedicated LINAC by using a primate model. Measured 50% spot widths for multisource, single-shot radiation exceeded nominal values in all cases by 38 to 70% for the GK unit and 11 to 33% for the LINAC system. Measured offsets were indicative of submillimeter targeting precision on both devices. In primate studies, the appearance of an magnetic resonance imaging—enhancing lesion coincided with the intended target. Conclusions. Radiosurgery performed using the 3-mm collimator of the dedicated LINAC exhibited characteristics that compared favorably with those of a dedicated GK unit. Overall targeting accuracy in the submillimeter range can be achieved, and dose distributions with sharp falloff can be expected for both devices.

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