Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser
碩士 === 輔仁大學 === 物理學系 === 89 === At present , sorts of developed laser light sources still have restrictions on the range of the containing wavelength . The technique of lasers producing optical second harmonic generation (SHG) by frequency- transforming crystals just provides the source o...
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ndltd-TW-089FJU001980152016-07-06T04:10:41Z http://ndltd.ncl.edu.tw/handle/90246344965477756291 Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser 二極體激發式摻釹釩酸釔近紅外光及倍頻綠光雷射之研究 Michael Tung 董畯豪 碩士 輔仁大學 物理學系 89 At present , sorts of developed laser light sources still have restrictions on the range of the containing wavelength . The technique of lasers producing optical second harmonic generation (SHG) by frequency- transforming crystals just provides the source of other wavelength . A miniature , easily fabricated , and cheap solid state laser system without any cooling equipment presents great potential on commercial purpose . With kinds of active medium gradually developed , it is more important to styles of lasers made by the technique of intercavity optical second harmonic generation . Green frequency-doubling laser manufactured by Nd:YVO4 / KTP crystal supplies manifold applications . In the respect of low power applications , it can be used to be the source of light information storage system , laser pointer , and light coherent communication . It can be one of three primary element colors for the needing of laser display , too . In this thesis , we are aimed at Nd-doped YVO4 near-infrared laser and green frequency-doubling laser . This design made of hemi-spherical cavity , which is extremely simple , represents a miniature low power 1.064 infrared laser by 1 % , 2 % , 3 % Nd-doping density , and 1 mm , 2 mm , 3 mm YVO4 crystal . The influence of these two factors on the performance of output power was investigated . We find in 1 mm YVO4 crystals , laser used by 2 at.% Nd-doping crystal has higher output power . Crystal length is 2 mm or 3 mm , 1 at.% Nd-doping crystal gets higher output power . To the part of green laser , we put KTP crystal in the hemi-spherical cavity to produce green frequency-doubling laser , and find the relation between input and output power . The difference of conversion efficiency measured from a miniature , monolithic green SHG laser are compared with the crystal coating on the two end faces , which is stuck Nd:YVO4 and different length KTP together . It is found that the longer KTP length increase , the higher conversion efficiency of green frequency-doubling laser improve . Wu Kun-Dong Yao Yong-De 吳坤東 姚永德 2001 學位論文 ; thesis 81 zh-TW |
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碩士 === 輔仁大學 === 物理學系 === 89 === At present , sorts of developed laser light sources still have restrictions on the range of the containing wavelength . The technique of lasers producing optical second harmonic generation (SHG) by frequency- transforming crystals just provides the source of other wavelength . A miniature , easily fabricated , and cheap solid state laser system without any cooling equipment presents great potential on commercial purpose . With kinds of active medium gradually developed , it is more important to styles of lasers made by the technique of intercavity optical second harmonic generation . Green frequency-doubling laser manufactured by Nd:YVO4 / KTP crystal supplies manifold applications . In the respect of low power applications , it can be used to be the source of light information storage system , laser pointer , and light coherent communication . It can be one of three primary element colors for the needing of laser display , too .
In this thesis , we are aimed at Nd-doped YVO4 near-infrared laser and green frequency-doubling laser . This design made of hemi-spherical cavity , which is extremely simple , represents a miniature low power 1.064 infrared laser by 1 % , 2 % , 3 % Nd-doping density , and 1 mm , 2 mm , 3 mm YVO4 crystal . The influence of these two factors on the performance of output power was investigated . We find in 1 mm YVO4 crystals , laser used by 2 at.% Nd-doping crystal has higher output power . Crystal length is 2 mm or 3 mm , 1 at.% Nd-doping crystal gets higher output power .
To the part of green laser , we put KTP crystal in the hemi-spherical cavity to produce green frequency-doubling laser , and find the relation between input and output power .
The difference of conversion efficiency measured from a miniature , monolithic green SHG laser are compared with the crystal coating on the two end faces , which is stuck Nd:YVO4 and different length KTP together .
It is found that the longer KTP length increase , the higher conversion efficiency of green frequency-doubling laser improve .
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author2 |
Wu Kun-Dong |
author_facet |
Wu Kun-Dong Michael Tung 董畯豪 |
author |
Michael Tung 董畯豪 |
spellingShingle |
Michael Tung 董畯豪 Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser |
author_sort |
Michael Tung |
title |
Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser |
title_short |
Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser |
title_full |
Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser |
title_fullStr |
Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser |
title_full_unstemmed |
Studies of Diode-Pumped Neodymium Doped Yttrium Orthvanadate (Nd:YVO4 ) Near-Infrared and Green Frequency- Doubling Laser |
title_sort |
studies of diode-pumped neodymium doped yttrium orthvanadate (nd:yvo4 ) near-infrared and green frequency- doubling laser |
publishDate |
2001 |
url |
http://ndltd.ncl.edu.tw/handle/90246344965477756291 |
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