Modified threshold of two-photon-pumped random lasing of ZnO nanorods by femtosecond laser ablation

2012 ◽  
Vol 112 (6) ◽  
pp. 063102 ◽  
Author(s):  
Jun Dai ◽  
Zhi-Cheng Fu ◽  
Sheng Lan ◽  
Xia Wan ◽  
Shao-Long Tie ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Zno Nanorods ◽  
Femtosecond Laser Ablation ◽  
Random Lasing ◽  
Two Photon

scholarly journals Selective femtosecond laser ablation via two-photon fluorescence imaging through a multimode fiber

2019 ◽  
Vol 10 (2) ◽  
pp. 423 ◽  
Author(s):  
Eirini Kakkava ◽  
Marilisa Romito ◽  
Donald B. Conkey ◽  
Damien Loterie ◽  
Konstantina M. Stankovic ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Fluorescence Imaging ◽  
Femtosecond Laser Ablation ◽  
Multimode Fiber ◽  
Two Photon ◽  
Two Photon Fluorescence ◽  
Photon Fluorescence

scholarly journals Limitations of Collateral Flow after Occlusion of a Single Cortical Penetrating Arteriole

2010 ◽  
Vol 30 (12) ◽  
pp. 1914-1927 ◽  
Author(s):  
Nozomi Nishimura ◽  
Nathanael L Rosidi ◽  
Costantino Iadecola ◽  
Chris B Schaffer
Keyword(s):  
Blood Flow ◽  
Laser Ablation ◽  
Femtosecond Laser ◽  
Blood Cell ◽  
Femtosecond Laser Ablation ◽  
Collateral Flow ◽  
Rat Cortex ◽  
Two Photon Microscopy ◽  
Two Photon ◽  
Capillary Response

Occlusions of penetrating arterioles, which plunge into cortex and feed capillary beds, cause severe decreases in blood flow and are potential causes of ischemic microlesions. However, surrounding arterioles and capillary beds remain flowing and might provide collateral flow around the occlusion. We used femtosecond laser ablation to trigger clotting in single penetrating arterioles in rat cortex and two-photon microscopy to measure changes in microvessel diameter and red blood cell speed after the clot. We found that after occlusion of a single penetrating arteriole, nearby penetrating and surface arterioles did not dilate, suggesting that alternate blood flow routes are not actively recruited. In contrast, capillaries showed two types of reactions. Capillaries directly downstream from the occluded arteriole dilated after the clot, but other capillaries in the same vicinity did not dilate. This heterogeneity in capillary response suggests that signals for vasodilation are vascular rather than parenchymal in origin. Although both neighboring arterioles and capillaries dilated in response to topically applied acetylcholine after the occlusion, the flow in the territory of the occluded arteriole did not improve. Collateral flow from neighboring penetrating arterioles is neither actively recruited nor effective in improving blood flow after the occlusion of a single penetrating arteriole.

scholarly journals Ridge waveguide lasers in Nd:GGG crystals produced by swift carbon ion irradiation and femtosecond laser ablation

2012 ◽  
Vol 20 (9) ◽  
pp. 9763 ◽  
Author(s):  
Yuechen Jia ◽  
Ningning Dong ◽  
Feng Chen ◽  
Javier R. Vázquez de Aldana ◽  
Sh. Akhmadaliev ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Ion Irradiation ◽  
Femtosecond Laser Ablation ◽  
Ridge Waveguide ◽  
Carbon Ion ◽  
Waveguide Lasers ◽  
Ridge Waveguide Lasers
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