• 제목/요약/키워드: High Power Diode Laser

검색결과 142건 처리시간 0.021초

다이오드레이저를 이용한 디스플레이 모듈 내 이방성 전도 필름(ACF) 접합 기술에 관한 연구 (Study on a New ACF Bonding Methods in LCD Module Using a High Power Diode Laser)

  • 류광현;서명희;남기중;곽노흥
    • 한국레이저가공학회지
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    • 제8권3호
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    • pp.21-26
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    • 2005
  • A bonding process between tape-carrier package and a glass panel with anisotropic conductive film (ACF) has been investigated by making use of high power diode laser as a heat source for cure. The results from modeling of process and from optical properties of layers showed that heat absorbed from polyimide film surface and ACF layer is dominant source of curing during laser illumination. Laser ACF bonding has better bonding quality than conventional bonding in view of peel strength, flatness, pressure unbalance and processing time. New ACF bonding processes by making use of high power diode laser are proposed.

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금속 표면경화용 고출력 다이오드 레이저 개발 프로세스 (Development Process for High Power Diode Laser for Metal Surface Hardening)

  • 장동환
    • 한국기계가공학회지
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    • 제21권2호
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    • pp.11-22
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    • 2022
  • This paper presents the development process for a high-power diode laser for metal surface hardening. To combine the emissions from several laser bars, it is necessary to collimate the emitted light using an optical lens. Thus, to achieve a suitable power density and uniform beam profile, several optical layouts were proposed. To estimate the laser beam for a flat-top distribution, a numerical analysis was performed using the ZEMAX software, and the results were compared with the experimental results. With a focal lens assembled in a serial diode stack source, the design can utilize the advantage of compacting the overall beam size. Experimental results for a robotic system demonstrated the processing ability of this diode laser module in industrial laser hardening.

다이오드 레이저를 이용한 Chip On Glass 접합에 관한 연구 (Study of Chip On Glass Bonding Method using Diode Laser)

  • 서명희;류광현;남기중
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2005년도 추계학술대회 논문집
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    • pp.423-426
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    • 2005
  • A new chip on glass(COG) technique by making use of a high power diode laser for LCD driver IC packaging of LCD has been developed. A laser joining technology of the connection of IC chip to glass panel has several advantages over conventional method such as hot plate joining: shorter process time, high reliability of joining, and better fur fine pitch joining. The reach time to cure temperature of ACF in laser joining is within 1 second. In this study, results show that the total process time of joining is reduced by halves than that of conventional method. The adhesion strength is mainly 100-250 N/cm. It is confirmed that the COG technology using high power diode laser joining can be applied to advanced LCDs with a fine pitch.

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2.5kW급 레이져 다이오드 구동 드라이버 개발 (A Study on the 2.5kW Laser Diode Driver)

  • 안준선;박동현;한유일;한경석
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2014년도 전력전자학술대회 논문집
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    • pp.59-60
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    • 2014
  • In this paper, development of laser diode driver with 2.5kW rating is presented. The driver is configured with interleaved PFC converter, high frequency full bridge DC-DC converter, two laser diode drivers and ${\mu}$-processor based controller. The system has two laser diode drivers for providing high current and low current. High current driver delivers normal output power of diode; low current driver is for providing critical current of diode for long lifetime. Computer simulation and experiment was performed for verification, as the results, developed driver performs well.

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의료기기용 고속 고출력 레이저 다이오드 드라이버 개발 (A Study On the High Speed High Power LD Driver for Medical Application)

  • 안준선
    • 한국정보전자통신기술학회논문지
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    • 제7권4호
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    • pp.147-150
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    • 2014
  • 본 논문은 고속 고출력 레이저 다이오드(Laser Diode: LD) 구동에 사용되는 펄스형 전원장치의 개발에 관하여 논 하였다. 고속 고출력 레이저는 주로 가공기기나 의료기기 등에 응용되고 있어 그 사용 범위가 넓어지는 추세이나 관련된 기술에 대한 연구는 활발히 이루어지지 않은 편이다. 본 연구에서는 고속 고출력 LD의 구동에 적합한 LLC컨버터에 관한 연구를 수행 하였으며 특히 LD의 수명을 고려하여 구동 전류의 주파수를 유지하며 인가되는 전류의 크기를 임계전류를 고려한 방식으로 설계하여 드라이버 설계를 수행하였으며 그 결과를 실험을 통하여 확인하였다.

다이오드 레이저를 이용한 연소진단기법 (Combustion Diagnostics Method Using Diode Laser Absorption Spectroscopy)

  • 차학주;김민수;신명철;김세원;김혁주;한재원
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 제26회 KOSCO SYMPOSIUM 논문집
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    • pp.75-83
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    • 2003
  • Diode laser absorption system is advantageous of their non-invasive nature, fast response time, high sensitivity and real-time measurement capability. Furthermore, recent advances in room-temperature, near-IR and visible diode laser sources for telecommunication, optical data storage applications are enabling combustion diagnostics system based on diode laser absorption spectroscopy. So, combined with fiber-optics and high sensitive detection strategies, compact and portable sensor system are now appearing for a variety of applications. The objective of this research is to take advantage of distributed feed-back diode laser and develope new gas sensing system. It experimentally found out that the wavelength, power characteristics as a function of injection current and temperature. In addition to direct absorption and wavelength modulation spectroscopy have been demonstrated in these experiments and have a bright prospect to this diode laser system.

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Intracavity frequency doubling of a slab Nd:YAG laser pumped by high power diode laser array

  • Lee, Jong-Min;Moon, Hee-Jong;Yi, Jong-Hoon
    • Journal of the Optical Society of Korea
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    • 제2권1호
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    • pp.5-8
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    • 1998
  • A high power diode-array-pumped slab Nd:YAG laser is described. The resonator consists of three mirrors in folded geometry. The laser is operated in acousto-optic Q-switching mode and intracavity frequency doubling is tried. We demonstrate that the laser exhibits frequency doubling efficiency of ∼60% with a type I LBO crystal.

고출력 laser diode를 위한 AR, HR coating simulation에 관한 연구 (A study on AR, HR coating simulations for the high power laser diode)

  • 류정선;윤영섭
    • E2M - 전기 전자와 첨단 소재
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    • 제9권5호
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    • pp.498-505
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    • 1996
  • In the present work, we have developed the simulator to optimize the process conditions of the AR(antireflection) and HR(high-reflection) coatings for the high power laser diode. The simulator can run on the PC. After making the simple optical model, we establish the Maxwell equations for the model by the operator conversion. By using the Mathematica, we derive a matrix for the multilayer system by applying the equations to the model and optimize the AR and HR coating process conditions by obtaining the reflection rate from the matrix. We also prove the validity of the simulator by comparing the simulation with the characteristics of the laser diode which is AR and HR coated according to the optimized conditions.

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Laser Diode Tester 개발과 비젼 피드백을 이용한 위치 보정 (Development of Laser Diode Tester and Position Compensation using Feedback with Machine Vision)

  • 김재희;유철우;박상민;유범상
    • 한국공작기계학회논문집
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    • 제13권4호
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    • pp.30-36
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    • 2004
  • The development of LD(Laser Diode) tester and its control system based on the graphical programming language(LabVIEW) is addressed. The ill tester is used to check the optic power and the optic spectrum of the LD Chip. The emitter size of LD chip and the diameter of the Detector(optic fiber and photo diode) are very small, therefore the test device needs high accuracy. But each motion part of the test device could not accomplish high accuracy due to the limit of the mechanical performance. So, an image processing with machine vision is proposed to compensate for the error. By adopting our method we can reduce the error of position within $\pm$5$\mu\textrm{m}$.

고속주축 모니터링용 광파이버 변위센서의 레이저 다이오드 출력에 따른 성능평가 (Performance Evaluation according to Optical Power of Laser Diode of Optical Fiber Displacement Sensor for Monitoring High Speed Spindle.)

  • 박찬규;신우철;홍준희;이동주
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2004년도 춘계학술대회 논문집
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    • pp.376-380
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    • 2004
  • This paper is to develop an optical ruer displacement sensor for monitoring high speed spindle. Proper magnitude of optical power as well as amplification of output signal are necessary to improve sensitivity of the sensor. In this paper, to meet the need of improvement of the sensor resolution, we choose proper optical power and amplification level through speculating on optical power of a laser diode.

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