SPIE LASE最新文献_第6页

High speed printing with polygon scan heads 高速打印多边形扫描头

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2218292

G. Stutz

引用次数: 1

Real time M2 and beam parameter product measurement using GigE CMOS sensors 使用GigE CMOS传感器实时测量M2和光束参数产品

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2209663

M. Scaggs, G. Haas

{"title":"Real time M2 and beam parameter product measurement using GigE CMOS sensors","authors":"M. Scaggs, G. Haas","doi":"10.1117/12.2209663","DOIUrl":"https://doi.org/10.1117/12.2209663","url":null,"abstract":"The ISO 11146-1 standard for measurement of a laser’s M-square requires the minimum measurement of five (5) spatial profiles within the first Rayleigh range and an addition five (5) outside the second Rayleigh range. The first five spatial profiles within the first Rayleigh range establish the beam waist and its location; the second five beyond the second Rayleigh range establish the divergence or convergence from the focusing lens for the M-square computation. The majority of methods used to date are all time averaged and as such are incapable of a real time M-square measurement. We present an ISO 11146-1 compliant method for measuring single shot M-square or beam parameter product values or the measurement of continuous wave sources at rates greater than five frames per second utilizing a pair of GigE based CMOS sensors. One GigE CMOS sensor is setup to measure the minimum of five spots within the first Rayleigh range for the establishment of the beam waist and its location. A second GigE CMOS sensor is setup to measure the five spatial profiles beyond the second Rayleigh range for the determination of the beam divergence from the focusing lens. Both GigE cameras utilize optics that passively create multiple spatial time slices of the beam and superimpose these time slices on the CMOS sensor in real time resulting in the ability to make single pulse measurements or continuous wave measurements at speeds of greater than five frames per second with full ISO 11146-1 compliance.","PeriodicalId":314691,"journal":{"name":"SPIE LASE","volume":"186 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120870516","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}

引用次数: 0

Quantum dot optofluidic lasers and their prospects for biochemical sensing 量子点光流激光器及其在生化传感中的应用前景

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2214889

A. Kiraz, Qiushu Chen, M. Aas, A. Jonáš, Xudong Fan

{"title":"Quantum dot optofluidic lasers and their prospects for biochemical sensing","authors":"A. Kiraz, Qiushu Chen, M. Aas, A. Jonáš, Xudong Fan","doi":"10.1117/12.2214889","DOIUrl":"https://doi.org/10.1117/12.2214889","url":null,"abstract":"We achieved four types of laser emissions with quantum dots (QDs) using the same high-Q-factor optofluidic ring resonator (OFRR) platform. In the first type, 2 μM QDs dissolved in toluene that filled the entire OFRR cavity volume were employed as the gain medium. The lasing threshold was 15-22 μJ/mm2. In the second type, 2 μM aqueous QDs were in bulk buffer solution that filled the entire OFRR cavity volume. The lasing threshold was 0.1 μJ/mm2, over 3 orders of magnitude lower than the state-of-the-art. In the third type, the aqueous QDs were immobilized as a single layer on the interface between the OFRR inner wall and buffer solution with a surface density as low as 3×109 − 1010cm−2. The lasing threshold of 60 μJ/mm2 was achieved. In the fourth type, we achieved optofluidic FRET lasing using aqueous QDs as FRET donors and Cy5 dye molecules as acceptors. We observed lasing from Cy5 emission band in QD-Cy5 pair when excited at QD absorption band, far away from Cy5 absorption maximum. We also report a comprehensive theoretical analysis of optofluidic FRET lasers that was performed based on a Fabry-Perot microcavity using a rate equation model. By comparing FRET lasingbased sensors with conventional sensors using FRET signals obtained by spontaneous fluorescence emission, we show that for optimal pump fluence and FRET pair concentration, FRET lasing can lead to more than 20-fold enhancement in detection sensitivities of conformation changes for linker lengths in the Förster radius range.","PeriodicalId":314691,"journal":{"name":"SPIE LASE","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121367120","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}

引用次数: 1

Packaging of hard solder 500W QCW diode laser array 硬焊500W QCW二极管激光阵列封装

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2213977

Xiaoning Li, Jingwei Wang, D. Hou, Zhiqiang Nie, Xingsheng Liu

引用次数: 2

Largest in the world bimorph deformable mirror for high-power laser beam correction 世界上最大的用于高功率激光束校正的双变形镜

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2222003

A. Kudryashov, V. Samarkin, A. Aleksandrov, G. Borsoni, T. Jitsuno, P. Romanov, J. Sheldakova

引用次数: 2

Using mechanics to convert between microwave and optical frequencies 利用力学在微波和光学频率之间进行转换

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2217044

A. Vainsencher, K. Satzinger, G. Peairs, A. Cleland

{"title":"Using mechanics to convert between microwave and optical frequencies","authors":"A. Vainsencher, K. Satzinger, G. Peairs, A. Cleland","doi":"10.1117/12.2217044","DOIUrl":"https://doi.org/10.1117/12.2217044","url":null,"abstract":"We demonstrate unique piezoelectric optomechanical devices able to coherently transfer microwave electrical signals to modulated optical signals, and vice versa, transferring modulated optical signals to microwave electrical signals. This coherent bilateral transfer, demonstrated most recently in a single device design, holds promise for the eventual demonstration of coherent transfer in the quantum domain. The basis of design for the devices with which this was accomplished is an optomechanical crystal that supports co-located optical and mechanical resonant modes, coupled to one other via moving boundary (index of refraction) modulation, either induced by motion from energy in the mechanical mode, or by optical pressure due to energy in the optical mode. The basis for coupling microwave mechanical motion to microwave electrical signals is via the use of a piezoelectric material for the entire device, where transduction itself is accomplished using metal transducers remote from the optomechanical structure. This remote design minimizes the lossy interaction of any optical signals with the metal electrode structures, but introduces the need to couple the electromechanical transducer to the optomechanical transducer via itinerant phonons, which presents a new challenge.","PeriodicalId":314691,"journal":{"name":"SPIE LASE","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122612781","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}

引用次数: 0

Model-based adhesive shrinkage compensation for increased bonding repeatability 基于模型的胶粘剂收缩补偿，增加粘接重复性

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2212527

T. Müller, Christian Schlette, Shunmuganathan Lakshmanan, S. Haag, D. Zontar, S. Sauer, C. Wenzel, C. Brecher, J. Roβmann

{"title":"Model-based adhesive shrinkage compensation for increased bonding repeatability","authors":"T. Müller, Christian Schlette, Shunmuganathan Lakshmanan, S. Haag, D. Zontar, S. Sauer, C. Wenzel, C. Brecher, J. Roβmann","doi":"10.1117/12.2212527","DOIUrl":"https://doi.org/10.1117/12.2212527","url":null,"abstract":"The assembly process of optical components consists of two phases – the alignment and the bonding phase. Precision - or better process repeatability - is limited by the latter one. The limitation of the alignment precision is given by the measurement equipment and the manipulation technology applied. Today’s micromanipulators in combination with beam imaging setups allow for an alignment in the range of far below 100nm. However, once precisely aligned optics need to be fixed in their position. State o f the art in optics bonding for laser systems is adhesive bonding with UV-curing adhesives. Adhesive bonding is a multi-factorial process and thus subject to statistical process deviations. As a matter of fact, UV-curing adhesives inherit shrinkage effects during their curing process, making offsets for shrinkage compensation mandatory. Enhancing the process control of the adhesive bonding process is the major goal of the activities described in this paper. To improve the precision of shrinkage compensation a dynamic shrinkage prediction is envisioned by Fraunhofer IPT. Intense research activities are being practiced to gather a deeper understanding of the parameters influencing adhesive shrinkage behavior. These effects are of different nature – obviously being the raw adhesive material itself as well as its condition, the bonding geometry, environmental parameters like surrounding temperature and of course process parameters such as curing properties. Understanding the major parameters and linking them in a model-based shrinkage-prediction environment is the basis for improved process control. Results are being deployed by Fraunhofer in prototyping, as well as volume production solutions for laser systems.","PeriodicalId":314691,"journal":{"name":"SPIE LASE","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126136579","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}

引用次数: 2

Advancements in flowing diode pumped alkali lasers 流动二极管抽运碱激光器的研究进展

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2217078

G. Pitz, D. Stalnaker, E. Guild, Benjamin Q. Oliker, P. Moran, S. Townsend, D. Hostutler

引用次数: 56

Development of packaged silica microspheres coupled with tapered optical microfibres 封装二氧化硅微球与锥形光学微纤维耦合的研制

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2211757

Pengfei Wang, R. Madugani, Haoyu Zhao, J. Ward, Yong Yang, G. Farrell, G. Brambilla, S. Nic Chormaic

引用次数: 2

Optical heterodyne detection for ultra-high Q micro-disk laser sensor 超高Q微盘激光传感器的光外差检测

SPIE LASE Pub Date : 2016-04-22 DOI: 10.1117/12.2212466

Myung-Gi Ji, Byung-Hee Son, Tae-Ryong Kim, M. Jung, H. Kim, Chil-Min Kim, K. Oh, Young-Wan Choi

引用次数: 4