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Rotating-mirror Q-switched Er:YAG laser for optodynamic studies
Bizjak, Aleš (Author), Nemeš, Karolj (Author), Možina, Janez (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-GALGUM4F This link opens in a new window

Abstract
In this article a development of a simple, reliable and repeatable Q-switched Er:YAG laser with a pulse duration of 270 ns and energies up to 16 mJ in a TEM00 spatial beam mode is presented. The Q-switching is performed mechanically with a flat, highly reflective silicon rotating mirror. The laser pumping chamber is cooled with thermally stabilized de-ionized water. This laser is intended for optodynamic studies of the short Er:YAG laser pulses with various media, primarily those containing water, where the thermal diffusion effects are negligible.

Language:English
Keywords:Er:YAG laser, Q-switch, inverse population, optodynamics, Xe flash lamp, rotating mirror
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2011
Publisher:= Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 3-10
Numbering:Vol. 57, no. 1
UDC:621.375.826
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2010.120 Link is opened in a new window
COBISS.SI-ID:11701531 Link is opened in a new window
Views:405
Downloads:134
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:Slovenian
Abstract:
Svetloba z valovno dolžino 2940 nm, ki jo oddaja Er:YAG laser, sovpada z vrhom absorpcijskega spektra vode in se zato zelo močno in selektivno absorbira v vseh snoveh, ki vsebujejo vodo. Poleg vode se dobro absorbira tudi v hidroksiapatitu, ki sestavlja zobe in kosti. Običajni Er:YAG laserji delujejo v prostem režimu in dosegajo doline bliskov med nekaj deset mikro do nekaj milisekund. Nezaželena lastnost tovrstnih razmeroma dolgih laserskih bliskov je, da znaten del svetlobne energije s termičnim prevajanjem preide v širšo okolico mesta interakcije in jo toplotno obremeni. Za primere, kjer je zaželeno, da absorbirana energija ostane v neposredni bližini mesta interakcije, je možno znatno skrajšati laserske bliske in sicer tako, da se v sistem vključi preklopnik kvalitete.

Keywords:laserji, termično lečenje, vrteče zrcalo, optodinamika

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