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  • ICALEO 2007 Paper #M101 (Femtosecond Laser Induced Structural Modifications in Lithium Niobate for Integrated Optical Applications (Invited Paper - 40 Minute Presentation))

    Femtosecond Laser Induced Structural Modifications in Lithium Niobate for Integrated Optical Applications (Invited Paper - 40 Minute Presentation)
    Authors:
    Stefan Nolte, Friedrich-Schiller-University Jena; Jena Germany
    Jens Thomas, Friedrich-Schiller-University Jena; Jena Germany
    Jonas Burghoff, Friedrich-Schiller-University Jena; Jena Germany
    Andreas Tünnermann, Friedrich-Schiller-University Jena; Jena Germany
    Antonio Ancona, Friedrich-Schiller-University Jena; Jena Germany
    Felix Dreisow, Friedrich-Schiller-University Jena; Jena Germany
    Presented at ICALEO 2007

    Within the past years the use of ultrashort laser pulses has foun...

    $28.00

  • ICALEO 2007 Paper #M1006 (Microvia Drilling with a Green Laser)

    Microvia Drilling with a Green Laser
    Authors:
    Chong Zhang, CREOL, University of Central Florida; Orlando FL USA
    Nathaniel Quick, AppliCote Associates, LLC; Sanford FL USA
    Aravinda Kar, CREOL, University of Central Florida; Orlando FL USA
    Presented at ICALEO 2007

    Microvias drilling in polymer-copper-polymer multilayer substrate for high density electronic packaging applications is studied in this paper. Frequency doubled Nd:YAG laser (532 nm) is used for the simulation and experiment. Numerical thermal model is built to simulate the drilling process. Volumetric heating and laser self defocusing due to drilling front profile are considered in the model. Due to the low ab...

    $28.00

  • ICALEO 2007 Paper #M1005 (Multi-Oxides Thin Film Formation on Iron-Base Metal by YVO4 Pulsed Laser Color Marking)

    Multi-Oxides Thin Film Formation on Iron-Base Metal by YVO4 Pulsed Laser Color Marking
    Authors:
    Hiroyuki Niino, Natl Inst Adv Ind Sci & Technol (AIST); Tsukuba Japan
    Seisuke Kano, Natl Inst Adv Ind Sci & Technol (AIST); Tsukuba Japan
    Tadatake Sato, Natl Inst Adv Ind Sci & Technol (AIST); Tsukuba Japan
    Kaoru Itagaki, Itagaki Metals Co. Ltd; Sanjo Japan
    Tomoyuki Togashi, Itagaki Metals Co. Ltd; Sanjo Japan
    Hirofumi Shimura, Natl Inst Adv Ind Sci & Technol (AIST); Tsukuba Japan
    Presented at ICALEO 2007

    Laser marking is a useful technique to draw characters and patterns on metals as a monochromic color. Recently some researches report...

    $28.00

  • ICALEO 2007 Paper #M1004 (Micro Drilling with Nd:YAG Lasers in the Nanosecond Regime)

    Micro Drilling with Nd:YAG Lasers in the Nanosecond Regime
    Authors:
    Reiner Witte, Lasag AG; Thun Switzerland
    Rene Liebers, Lasag AG; Thun Switzerland
    Tobias Moser, Lasag AG; Thun Switzerland
    Presented at ICALEO 2007

    Drilling with Lasers has come a long way since Theodore Maiman reported the first working laser some forty Years ago. New laser sources and specially developed processes are entering the market to move the mere drilling to the next level of micro drilling. Surgical needles in the medical field, turbine blades for the aviation industry, and gas filter for the automotive industry are just some examples that come to mind here. Nevertheless, the market asks ...

    $28.00

  • ICALEO 2007 Paper #M1003 (Spatial-confinement Effects in Laser-induced Breakdown Spectroscopy)

    Spatial-confinement Effects in Laser-induced Breakdown Spectroscopy
    Authors:
    X.K. Shen, University of Nebraska - Lincoln; Lincoln NE USA
    J. Sun, University of Nebraska - Lincoln; Lincoln NE USA
    Yongfeng Lu, University of Nebraska - Lincoln; Lincoln NE USA
    Presented at ICALEO 2007

    The spatial confinement effects in laser-induced breakdown of aluminum (Al) targets in air have been investigated both by optical emission spectroscopy and fast photography. KrF excimer laser pulses with a pulse duration of 23 ns and a wavelength of 248 nm were used to produce plasmas from Al targets. Al atomic emission lines show an obvious enhancement in the intensity of optical emission whe...

    $28.00

  • ICALEO 2007 Paper #M1001 (Advanced Precision Laser Marking and Other Microelectronics Applications Including Wafer Dicing, PCB Drilling/Trimming and ITO Trimming using Industrial Nano-Second Lasers (Invited Paper - 40 Minute Presentation))

    Advanced Precision Laser Marking and Other Microelectronics Applications Including Wafer Dicing, PCB Drilling/Trimming and ITO Trimming using Industrial Nano-Second Lasers (Invited Paper - 40 Minute Presentation)
    Authors:
    Sangyoung Park, EO Technics; Anyang South Korea
    Nam Seong Kim, EO Technics; Anyang South Korea
    Seonghoon Kim, EO Technics; Anyang South Korea
    Wonchul Jung, EO Technics; Anyang South Korea
    Wangkyu Lim, EO Technics; Anyang Singapore
    Presented at ICALEO 2007

    Marking on semiconductor devices becomes complicated and difficult because ultra-reduction of the device size is being made to increase the memory capacity and processor...

    $28.00

  • ICALEO 2007 Paper #906 (Laser Assisted Machining of Commercially Pure Titanium)

    Laser Assisted Machining of Commercially Pure Titanium
    Authors:
    Shoujin Sun, Swinburne University of Technology; Melbourne Australia
    James Harris, Swinburne University of Technology; Melbourne Australia
    Yvonne Durandet , Swinburne University of Technology; Melbourne Australia
    Milan Brandt, Swinburne University of Technology; Melbourne Australia
    Presented at ICALEO 2007

    Laser assisted machining (LAM) has been performed on commercially pure titanium bar. Cutting forces have been measured with a 3-component force sensor, and tool temperature has been measured with thermocouples on the flank face. Both the scale and fluctuation of cutting forces were dramatica...

    $28.00

  • ICALEO 2007 Paper #905 (Underwater Rock Drilling by CO2 Laser)

    Underwater Rock Drilling by CO2 Laser
    Authors:
    Toshio Kobayashi, Japan Drilling Co.,Ltd; Tokyo Japan
    Kiyonobu Ohtani, Tohoku University; Sendai Japan
    Kazuyoshi Takayama, Tohoku University; Sendai Japan
    Satoru Umezu, Japan Drilling Co., LTD.,; Tokyo Japan
    Komei Okatsu, Japan Oil, Gas and Metals National Corporation; chiba Japan
    Presented at ICALEO 2007

    As a part of fundamental studies of drilling rocks by laser irradiation, this paper describes the evolution of a cavitation cone created by irradiation of pulsed carbon dioxide laser into water. A carbon dioxide laser beam was intermittently irradiated onto a granite specimen submerged at 50mm de...

    $28.00

  • ICALEO 2007 Paper #904 (Laser Peening of MIG Welded Joint of Aluminum Alloys)

    Laser Peening of MIG Welded Joint of Aluminum Alloys
    Authors:
    Muneharu Kutsuna, Nagoya University; Nagoya Japan
    Hiroki Inoue, Nagoya University; Nagoya Japan
    Kazuo Amano, Aichi Institute of Industrial technology; Aichi-ken Japan
    Yuji Sano, Toshiba Corp.; Yokohama Japan
    Presented at ICALEO 2007

    The effect of laser peening on fatigue strength of MIG welded joint of aluminum alloy, A5052 was investigated using a Q-switch YAG laser facility with high peak power.
    The mechanism of improvement of fatigue strength was also investigated by measuring the residual stress of the specimens and the hardness change. The toes of MIG welded joint were laser peened with th...

    $28.00

  • ICALEO 2007 Paper #903 (Laser Modification of the End of Thin Metal Tube)

    Laser Modification of the End of Thin Metal Tube
    Authors:
    Hajime Miyazawa, Nippon Institute of Technology; Saitama Japan
    Katsuyoshi Hotta, Nippon Institute of Technology; Saitama Japan
    Shojiro Miyake, Nippon Institute of Technology; Saitama Japan
    Presented at ICALEO 2007

    The end of the tubes used for catheter, nozzle and/or filter must be smoothly rounded. To produce the tube, it is cut at a length and then the end is polished mechanically. However, the smaller the diameter, the more difficult it becomes to finish it. Then, a basic study on the modification of the end of thin metal tube using laser technique is conducted. Thin stainless and copper tubes of diameters be...

    $28.00

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