Nd:YAG laser conditioning of KDP crystals investigated using nondestructive optical diagnostics

2013 ◽  
Author(s):  
Decheng Guo ◽  
Xiaodong Jiang ◽  
Jin Huang ◽  
Fengrui Wang ◽  
Hongjie Liu ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Optical Diagnostics ◽  
Laser Conditioning ◽  
Kdp Crystals

Bulk damage and laser conditioning of KDP and DKDP crystals with Xe-F excimer light and the 3w of a Nd:Yag laser (Abstract Only)

2003 ◽  
Author(s):  
Laurent Lamaignere ◽  
Marc Loiseau ◽  
Herve Piombini ◽  
Daniel Plessis ◽  
Herve Bercegol
Keyword(s):  
Nd:Yag Laser ◽  
Laser Conditioning

Laser conditioning process combining N/1 and S/1 programs to improve the damage resistance of KDP crystals

2009 ◽  
Author(s):  
Yuanan Zhao ◽  
Guohang Hu ◽  
Jianda Shao ◽  
Xiaofeng Liu ◽  
Hongbo He ◽  
...  
Keyword(s):  
Damage Resistance ◽  
Laser Conditioning ◽  
Conditioning Process ◽  
Kdp Crystals

Laser conditioning of KDP crystals using excimer and Nd:YAG lasers

2006 ◽  
Author(s):  
B. Bertussi ◽  
D. Damiani ◽  
M. Pommies ◽  
A. Dyan ◽  
H. Piombini ◽  
...  
Keyword(s):  
Nd:Yag Lasers ◽  
Laser Conditioning ◽  
Kdp Crystals

scholarly journals Effect of UV Laser Conditioning on the Structure of KDP Crystal

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Decheng Guo ◽  
Xiaodong Jiang ◽  
Jing Huang ◽  
Fengrui Wang ◽  
Hongjie Liu ◽  
...  
Keyword(s):  
Laser Fluence ◽  
Pulse Sequence ◽  
Damage Threshold ◽  
Uv Laser ◽  
Absorption Data ◽  
Kdp Crystal ◽  
Laser Conditioning ◽  
Before And After ◽  
The Individual ◽  
Kdp Crystals

Multiparametric raster scanning experiments for KDP crystals are carried out to study the laser conditioning efficiency as a function of laser fluence, fluence step, and pulse sequence by using ultraviolet (UV) laser irradiation with pulse duration of approximately 7 ns. It indicates that damage resistance of KDP can be enhanced after conditioning process. And laser conditioning efficiency depends on the maximal fluence which is below the damage threshold. Raman spectra and photothermal absorption have also been studied on KDP crystals before and after multiparametric laser conditioning. Photothermal absorption data reveal that absorbance of conditioned KDP crystal decreases with the increase of laser fluence and the damage threshold of low absorption area is higher. Raman analysis reveals that the effectiveness of laser conditioning relies mainly on the individual mode of PO4molecule.

Bipolar radiofrequency induced thermotherapy and 1064 nm Nd:Yag laser in endovenous occlusion of insufficient veins: short term follow up results

VASA ◽  
2011 ◽  
Vol 40 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Krnic ◽  
Sucic
Keyword(s):  
Side Effects ◽  
Success Rate ◽  
Nd:Yag Laser ◽  
Main Stem ◽  
Short Term ◽  
Main Trunk ◽  
Bipolar Radiofrequency ◽  
Saphenous Veins ◽  
Skin Redness ◽  
Complete Failure

Background: The aim of this study is to report our results in main stem vein closure using the bipolar radiofrequency induced thermotherapy (RFITT) system and the 1064nm Nd:Yag laser. Patients and methods: 44 incompetent main stem veins (37 great saphenous veins, one lesser saphenous vein, and 6 anterior accessory saphenous veins) in 29 patients were treated using RFITT. 53 incompetent main stem veins (45 great saphenous veins, 4 lesser saphenous veins, and 4 anterior accessory saphenous veins) in 43 patients were treated endovenously with 1064 nm Nd:Yag laser. All patients underwent postoperative duplex scanning within a month after procedure, as well as a short interview regarding postoperative discomfort. Results: In main stem veins treated with RFITT, the success rate within the first month was 86,4 % (38 out of 44 veins). Complete failure rate was 13,6 % (6 out of 44 veins). In 53 main stem veins treated by 1064 nm Nd:Yag laser, the success rate was 100 %, consisting of 98,1 % complete success (52/53 veins), and 1,9 % partial success (1/53 veins). None of the patients treated with RFITT experienced postoperative adverse effects, whereas 13/43 (30,2 %) patients treated with laser had to use oral analgesics after the treatment, and 21/43 (48,8 %) patients reported transient skin changes, such as bruising or skin redness. Conclusions: RFITT system was fairly efficient in the short term for closure of main trunk veins, whereas longer term results are still scarce. Postoperative side effects of RFITT were minimal. 1064nm Nd:Yag laser, according to short term results, proved to be very effective for main stem vein closure. Postoperative side effects related to 1064 nm Nd:Yag endovenous laser treatment proved to be minor, transient, and acceptable.

Das Management von Glaskörpertrübungen

2020 ◽  
Vol 10 (03) ◽  
pp. 243-254
Author(s):  
Albrecht Lommatzsch
Keyword(s):  
Nd:Yag Laser ◽  
Randomisierte Studien

ZusammenfassungDas Management von symptomatischen Glaskörpertrübungen stellt sich in der täglichen Praxis oft als kompliziert dar. Die Nd:YAG-Laser-Vitreolyse rückt als weitere therapeutische Option immer mehr in den Fokus. Vergleichende randomisierte Studien zur Vitrektomie, Nd:YAG-Laser-Vitreolyse und einer abwartenden Vorgehensweise zum Spontanverlauf gibt es leider nicht. Dieser Beitrag versucht, zu dieser Problematik einen Überblick zu geben.

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