Transverse Pumping with Diode Lasers
The transverse pumping of a cylindrical laser rod such as YAG by a set of diode laser arrays equally spaced in angle around the rod has been analyzed using both geometrical and wave optics. Between the pump sources and the laser rod there may be an arbitrary number of concentric media, transparent t...
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| description | The transverse pumping of a cylindrical laser rod such as YAG by a set of diode laser arrays equally spaced in angle around the rod has been analyzed using both geometrical and wave optics. Between the pump sources and the laser rod there may be an arbitrary number of concentric media, transparent to the pump light; and in addition modification of the diode laser radiation patterns will require other optical components. The analysis accommodates both of these complications, even when the optics in front of the diodes do not image point sources to points. It is sufficient to be able to describe the intensity and ray directions in finite apertures concentric with the rod. One result of the cylindrical geometry is the formation of caustics which have infinite intensity in the geometrical optics approximation; and it is necessary to develop a wave optics theory to predict the intensity in the neighborhood of the caustic edge of the illuminated region inside the laser rod. The wave theory first uses the geometrical optics method to calculate the amplitude and phase just inside the rod's surface, which serves then as an aperture distribution function describing the source of Huygens wavelets in the computation of a diffraction integral. |
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| fullrecord | <record><control><sourceid>dtic_1RU</sourceid><recordid>TN_cdi_dtic_stinet_ADA207261</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>ADA207261</sourcerecordid><originalsourceid>FETCH-dtic_stinet_ADA2072613</originalsourceid><addsrcrecordid>eNrjZFAJKUrMKy5LLSpOVQgozS3IzEtXKM8syVBwycxPSVXwSSwGSvEwsKYl5hSn8kJpbgYZN9cQZw_dlJLM5Pjiksy81JJ4RxdHIwNzIzNDYwLSAIhFI8M</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>report</recordtype></control><display><type>report</type><title>Transverse Pumping with Diode Lasers</title><source>DTIC Technical Reports</source><creator>Treacy, E B</creator><creatorcontrib>Treacy, E B ; THERMO ELECTRON TECHNOLOGIES CORP SAN DIEGO CA</creatorcontrib><description>The transverse pumping of a cylindrical laser rod such as YAG by a set of diode laser arrays equally spaced in angle around the rod has been analyzed using both geometrical and wave optics. Between the pump sources and the laser rod there may be an arbitrary number of concentric media, transparent to the pump light; and in addition modification of the diode laser radiation patterns will require other optical components. The analysis accommodates both of these complications, even when the optics in front of the diodes do not image point sources to points. It is sufficient to be able to describe the intensity and ray directions in finite apertures concentric with the rod. One result of the cylindrical geometry is the formation of caustics which have infinite intensity in the geometrical optics approximation; and it is necessary to develop a wave optics theory to predict the intensity in the neighborhood of the caustic edge of the illuminated region inside the laser rod. The wave theory first uses the geometrical optics method to calculate the amplitude and phase just inside the rod's surface, which serves then as an aperture distribution function describing the source of Huygens wavelets in the computation of a diffraction integral.</description><language>eng</language><subject>ADDITION ; APERTURES ; ARRAYS ; CAUSTICS ; CYLINDRICAL BODIES ; DIFFRACTION ; DIODES ; EDGES ; GEOMETRY ; ILLUMINATION ; INTENSITY ; LASER BEAMS ; LASERS ; Lasers and Masers ; LIGHT ; MEDIA ; MODIFICATION ; OPTICAL EQUIPMENT ; OPTICS ; ORIENTATION(DIRECTION) ; PUMPING ; PUMPS ; RADIATION PATTERNS ; REGIONS ; RODS ; SEMICONDUCTOR LASERS ; SOURCES ; SURFACES ; THEORY ; TRANSVERSE ; WAVES ; YTTRIUM ALUMINUM GARNET</subject><creationdate>1989</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,780,885,27567,27568</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADA207261$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Treacy, E B</creatorcontrib><creatorcontrib>THERMO ELECTRON TECHNOLOGIES CORP SAN DIEGO CA</creatorcontrib><title>Transverse Pumping with Diode Lasers</title><description>The transverse pumping of a cylindrical laser rod such as YAG by a set of diode laser arrays equally spaced in angle around the rod has been analyzed using both geometrical and wave optics. Between the pump sources and the laser rod there may be an arbitrary number of concentric media, transparent to the pump light; and in addition modification of the diode laser radiation patterns will require other optical components. The analysis accommodates both of these complications, even when the optics in front of the diodes do not image point sources to points. It is sufficient to be able to describe the intensity and ray directions in finite apertures concentric with the rod. One result of the cylindrical geometry is the formation of caustics which have infinite intensity in the geometrical optics approximation; and it is necessary to develop a wave optics theory to predict the intensity in the neighborhood of the caustic edge of the illuminated region inside the laser rod. The wave theory first uses the geometrical optics method to calculate the amplitude and phase just inside the rod's surface, which serves then as an aperture distribution function describing the source of Huygens wavelets in the computation of a diffraction integral.</description><subject>ADDITION</subject><subject>APERTURES</subject><subject>ARRAYS</subject><subject>CAUSTICS</subject><subject>CYLINDRICAL BODIES</subject><subject>DIFFRACTION</subject><subject>DIODES</subject><subject>EDGES</subject><subject>GEOMETRY</subject><subject>ILLUMINATION</subject><subject>INTENSITY</subject><subject>LASER BEAMS</subject><subject>LASERS</subject><subject>Lasers and Masers</subject><subject>LIGHT</subject><subject>MEDIA</subject><subject>MODIFICATION</subject><subject>OPTICAL EQUIPMENT</subject><subject>OPTICS</subject><subject>ORIENTATION(DIRECTION)</subject><subject>PUMPING</subject><subject>PUMPS</subject><subject>RADIATION PATTERNS</subject><subject>REGIONS</subject><subject>RODS</subject><subject>SEMICONDUCTOR LASERS</subject><subject>SOURCES</subject><subject>SURFACES</subject><subject>THEORY</subject><subject>TRANSVERSE</subject><subject>WAVES</subject><subject>YTTRIUM ALUMINUM GARNET</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1989</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZFAJKUrMKy5LLSpOVQgozS3IzEtXKM8syVBwycxPSVXwSSwGSvEwsKYl5hSn8kJpbgYZN9cQZw_dlJLM5Pjiksy81JJ4RxdHIwNzIzNDYwLSAIhFI8M</recordid><startdate>19890106</startdate><enddate>19890106</enddate><creator>Treacy, E B</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>19890106</creationdate><title>Transverse Pumping with Diode Lasers</title><author>Treacy, E B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADA2072613</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1989</creationdate><topic>ADDITION</topic><topic>APERTURES</topic><topic>ARRAYS</topic><topic>CAUSTICS</topic><topic>CYLINDRICAL BODIES</topic><topic>DIFFRACTION</topic><topic>DIODES</topic><topic>EDGES</topic><topic>GEOMETRY</topic><topic>ILLUMINATION</topic><topic>INTENSITY</topic><topic>LASER BEAMS</topic><topic>LASERS</topic><topic>Lasers and Masers</topic><topic>LIGHT</topic><topic>MEDIA</topic><topic>MODIFICATION</topic><topic>OPTICAL EQUIPMENT</topic><topic>OPTICS</topic><topic>ORIENTATION(DIRECTION)</topic><topic>PUMPING</topic><topic>PUMPS</topic><topic>RADIATION PATTERNS</topic><topic>REGIONS</topic><topic>RODS</topic><topic>SEMICONDUCTOR LASERS</topic><topic>SOURCES</topic><topic>SURFACES</topic><topic>THEORY</topic><topic>TRANSVERSE</topic><topic>WAVES</topic><topic>YTTRIUM ALUMINUM GARNET</topic><toplevel>online_resources</toplevel><creatorcontrib>Treacy, E B</creatorcontrib><creatorcontrib>THERMO ELECTRON TECHNOLOGIES CORP SAN DIEGO CA</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Treacy, E B</au><aucorp>THERMO ELECTRON TECHNOLOGIES CORP SAN DIEGO CA</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Transverse Pumping with Diode Lasers</btitle><date>1989-01-06</date><risdate>1989</risdate><abstract>The transverse pumping of a cylindrical laser rod such as YAG by a set of diode laser arrays equally spaced in angle around the rod has been analyzed using both geometrical and wave optics. Between the pump sources and the laser rod there may be an arbitrary number of concentric media, transparent to the pump light; and in addition modification of the diode laser radiation patterns will require other optical components. The analysis accommodates both of these complications, even when the optics in front of the diodes do not image point sources to points. It is sufficient to be able to describe the intensity and ray directions in finite apertures concentric with the rod. One result of the cylindrical geometry is the formation of caustics which have infinite intensity in the geometrical optics approximation; and it is necessary to develop a wave optics theory to predict the intensity in the neighborhood of the caustic edge of the illuminated region inside the laser rod. The wave theory first uses the geometrical optics method to calculate the amplitude and phase just inside the rod's surface, which serves then as an aperture distribution function describing the source of Huygens wavelets in the computation of a diffraction integral.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | DTIC Technical Reports |
| subjects | ADDITION APERTURES ARRAYS CAUSTICS CYLINDRICAL BODIES DIFFRACTION DIODES EDGES GEOMETRY ILLUMINATION INTENSITY LASER BEAMS LASERS Lasers and Masers LIGHT MEDIA MODIFICATION OPTICAL EQUIPMENT OPTICS ORIENTATION(DIRECTION) PUMPING PUMPS RADIATION PATTERNS REGIONS RODS SEMICONDUCTOR LASERS SOURCES SURFACES THEORY TRANSVERSE WAVES YTTRIUM ALUMINUM GARNET |
| title | Transverse Pumping with Diode Lasers |
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