Solid State Lasers XXVIII: Technology and Devices最新文献

{"title":"Front Matter: Volume 10896","authors":"","doi":"10.1117/12.2531314","DOIUrl":"https://doi.org/10.1117/12.2531314","url":null,"abstract":"","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"537 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123247295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High energy amplification of ultrafast pulses in a planar waveguide geometry (Conference Presentation)","authors":"M. Esser, K. Tkalcec, R. Birch, H. Baker","doi":"10.1117/12.2510184","DOIUrl":"https://doi.org/10.1117/12.2510184","url":null,"abstract":"","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"27 23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123207565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Free-space continuous-wave Brillouin laser using diamond (Conference Presentation)","authors":"Zhen-xu Bai, Robert J. Williams, O. Kitzler, S. Sarang, D. Spence, R. Mildren","doi":"10.1117/12.2508334","DOIUrl":"https://doi.org/10.1117/12.2508334","url":null,"abstract":"","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122437392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of non-linear energy transfer dynamics of erbium in yttrium aluminum garnet (Conference Presentation)","authors":"C. Vega, R. Shori, O. Stafsudd","doi":"10.1117/12.2515255","DOIUrl":"https://doi.org/10.1117/12.2515255","url":null,"abstract":"Author(s): Vega, Christian | Advisor(s): Stafsudd, Oscar M | Abstract: Yttrium Aluminum Garnet (YAG, Y_3 〖Al〗_5 O_12) crystals doped with Erbium have posed an interesting position in the field of rare earth solid state lasers as they possess the property of self-saturation, in which the upper energy level in a laser has a much shorter lifetime than that of the lower level. This is the case of the 2.94μm transition in Er:YAG. That property at first seems to make this material unfit for use as a laser gain medium, however further research into these classes of rare earth materials revealed interesting non-liner energy transfer mechanisms that allow it to be a useful mid wave infra-red (MWIR) coherent source in the continuous wave (CW) and pulsed regimes. This came to fruition due to decades of modeling and spectroscopic research investigating the non-linear energy transfer mechanisms of excited state absorption (ESA), energy transfer up-conversion (ETU), and cross relaxation (XR). These effects show up in the rise and fall times of the levels observed through fluorescence. Resulting in the non-exponential rise and fall characteristics and having a squared or even cubed relation to the population. The population evolution for each of the lasing levels is now affected by ions recycling energy and in turn cause the lifetimes of the levels to “effectively” change to a point where simple linear models do not adequately describe the system and its performance. The non-linear energy transfer dynamics of Er:YAG are modeled under high resonant pump conditions. By pumping with selective resonant pumps, the interaction dynamics of the (_ ^4)I_(11/2) and the (_ ^4)I_(13/2) levels in the Erbium ion reveal the contributions from generally ignored non-linear energy transfer mechanisms. Specifically, the multi-photon effect known as excited state absorption (ESA) is modeled by measuring and characterizing the cross section in single crystal Er:YAG samples utilizing a pump and probe technique coupled with transient fluorescence measurements. The measured ESA cross section is then included in the rate equation modeling.","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122261585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanically Q-switched and gain switched Fe:ZnSe lasers tunable over 3.60-5.15 µm (Conference Presentation)","authors":"D. Martyshkin, K. Karki, S. Mirov, V. Fedorov","doi":"10.1117/12.2511788","DOIUrl":"https://doi.org/10.1117/12.2511788","url":null,"abstract":"","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131548107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brightness enhancement of a compact, high energy, passively Q-switched Nd:YAG laser using volume Bragg gratings (Conference Presentation)","authors":"Evan R. Hale, I. Divliansky, L. Glebov","doi":"10.1117/12.2510178","DOIUrl":"https://doi.org/10.1117/12.2510178","url":null,"abstract":"","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131286827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Power-scalable ultrafast Ho:YAG slab amplifier at 2094 nm (Conference Presentation)","authors":"M. Esser, D. Morris, N. K. Stevenson, A. Lagatsky, Michael E. Reilly","doi":"10.1117/12.2510302","DOIUrl":"https://doi.org/10.1117/12.2510302","url":null,"abstract":"We present an amplifier system for 2 µm ultrafast laser pulses for potential material processing applications. The amplifier gain material is a 0.75 at.% doped Ho:YAG slab crystal measuring 10 mm x 1.5 mm x 55 mm. The pump source is an in-house developed continuous wave Tm:YLF slab laser which produces a maximum output power of 340 W, centred at the 1908 nm Ho:YAG absorption peak. The pump beam full widths were 0.2 mm by 5.3 mm in the slab. The seed for the experiment was a mode-locked Tm:LuScO3 laser that produced 200 fs pulses (~23.6 nm spectral bandwidth) centred at 2094 nm. The spectral peak of the seed laser was chosen so as to spectrally overlap both the 2090 and 2097 nm emission peaks of Ho:YAG. The pulse repetition frequency of the seed laser was 115 MHz, and the average power as measured after an optical isolator was ~57 mW. In the initial experiment the seed was focused into the slab using a spherical doublet lens pair to a beam diameter of 0.2 mm. The measured single pass gain was ~10 (up to 0.54 W) when pumped with 280 W. The effective pump power (disregarding transmitted pump light) in the gain volume used for amplification was estimated to be 8.3 W. The spectral bandwidth of the output signal was measured at several output powers and shown to converge to ~11.8 nm. Based on these results and in-house simulations we will implement a pre-amplifier and scale 2 µm ultrashort pulses to >100 W average power at MHz PRFs.","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121420362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Excitation of Fe(2+) ions via Cr(2+)->Fe(2+) and Co(2+)->Fe(2+) energy transfer in co-doped chalcogenide laser crystals (Conference Presentation)","authors":"V. Fedorov, Tristan Carlson, O. Gafarov, S. Mirov","doi":"10.1117/12.2511775","DOIUrl":"https://doi.org/10.1117/12.2511775","url":null,"abstract":"Recent progress in iron doped II-VI chalcogenide laser materials enabled important advancements in room temperature high energy, high power laser systems operating over 3.5-6.0 um. However, a lack of efficient and convenient pump sources for direct pumping of Fe(2+) ions limits possible applications of these materials. One viable option is using readily available pump sources to excite iron centers via Forster-Dexter energy transfer between transition metal ions. This paper reports on the characterization of iron-chromium and iron-cobalt energy transfer in Fe:Cr:ZnSe and Fe:Co:ZnSe co-doped crystals. The kinetics photoluminescence and spectroscopic measurements at 5T2-5E chromium and iron transitions indicated an efficient resonance energy transfer between ions even at room temperature. It was demonstrated that an energy transfer rate in Fe-Cr centers could be shorter than the upper level lifetime of Fe(2+) ions in ZnSe with total TM ions concentration larger than 10^19 cm^-3. Therefore, this mechanism can serve as an effective pump pathway for Fe lasing. Analysis of the dipole-dipole coupling between Fe(2+) and Cr(2+) ions demonstrated the for the shortest distance between iron and chromium ions in ZnSe host, the energy transfer rate is smaller than 1 ns. The absence of excited state absorption in Fe:Cr:ZnSe host make this materials more attractive in comparison with Fe:Co:ZnSe where Fe lasing due to excited state absorption of Co(2+) ions was limited only to low (<30K) temperature.","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134589867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spectral gain and 2-micron lasing in Tm:Lu2O3 ceramic under intense pumping (Conference Presentation)","authors":"J. Vetrovec, D. Filgas, D. Copeland, Carey A. Smith, E. Briscoe","doi":"10.1117/12.2511059","DOIUrl":"https://doi.org/10.1117/12.2511059","url":null,"abstract":"Wide-band tunable 2 µm lasers are sought for remote sensing, eye–safe lasers, laser processing of transparent plastics, medical therapy, ultra¬fast lasers (UFL), accelera¬tion of nuclear particles, and generation of visible output via harmonic conversion [1]. We have previously reported efficient lasing in Tm:Lu2O3 ceramic while tuning over 230-nm range in the vicinity of 2 µm and delivering up to 43 W QCW [2]. Tm:Lu2O3 ceramic gain material has a much lower saturation fluence than the traditionally used Tm:YLF and Tm:YAG materials, thus offering improved energy extraction. Ceramic construction offers size scalability and convenient fabrication of gain medium composites. \u0000This paper reports on experimental evaluation of laser gain and q-switched output pulse energy in vicinity of 2-microns in Tm:Lu2O3 ceramic rod end-pumped by 796-nm diodes. Also included is the operation and spectral gain evaluation of a Tm:Lu2O3 ceramic edge-pumped disk laser with multi-passed extraction, which is seeded by the above end-pumped rod laser. This work was supported by the U.S. Department of Energy grant number DE-SC0013762.\u00001. Drew A. Copeland, John Vetrovec, and Amar S. Litt, \"Wide-Bandwidth Ceramic Tm:Lu2O3 Amplifier,\" SPIE 9834, (2016).\u00002. John Vetrovec, et al., \"2-Micron Lasing in Tm:Lu2O3 Ceramic: Initial Operation,\" SPIE vol. 10511 (2018)","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117353597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"410W single stage in band pumped Nd:YVO4 INNOSLAB amplifier for ps pulses (Conference Presentation)","authors":"M. Höfer, B. Erben, J. V. Mosquera, R. Lutum, Hans-Dieter Hoffman","doi":"10.1117/12.2508610","DOIUrl":"https://doi.org/10.1117/12.2508610","url":null,"abstract":"We report an in band pumped single-stage 410 W INNOSLAB laser amplifier based on Nd:YVO4. VBG stabilized diodes are used to pump the crystal from both end faces at 880 nm wavelength. At 3 W@800KHz input power and a pulse duration of 300 ps an extraction efficiency of 44% is achieved. A beam quality of M2<1.5 (4-Sigma Method) and M2<1.3 (10/90 Knife Edge Method) is measured over the whole power range. The output beam is free of self-lasing or CW-background.","PeriodicalId":359441,"journal":{"name":"Solid State Lasers XXVIII: Technology and Devices","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124034368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}