Demonstration of high pointing accuracy, dual-axis collimation of 49 emitter diode bar using a laser-written custom phase-plate

Natalia Trela; Howard J. Baker; Jozef J. Wendland; Denis R. Hall

doi:10.1117/12.842197

Demonstration of high pointing accuracy, dual-axis collimation of 49 emitter diode bar using a laser-written custom phase-plate

Natalia Trela, Howard J. Baker, Jozef J. Wendland, Denis R. Hall

School of Engineering & Physical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

We present our work on a single optical component that combines fast-axis smile and lens error correction with slowaxis collimation, produced with a laser-cut phase-plate technique. Customized focal length of slow-axis lenses allows optimization of fill-factor of diode laser bars. In this paper we report on excellent beam properties obtained for a 49- single mode emitter array, 975 nm bar providing 30W cw output, with RMS pointing error of 3% and 6% of far-field divergence in fast- and slow-axis, respectively. We observed a pitch mismatch of 0.03% between the slow-axis lens array, with emitter pointing clearly affected by chip thermal expansion. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Original language	English
Title of host publication	High-Power Diode Laser Technology and Applications VIII
Volume	7583
DOIs	https://doi.org/10.1117/12.842197
Publication status	Published - 2010
Event	Fiber Lasers VII: Technology, Systems, and Applications - San Francisco, CA, United States Duration: 25 Jan 2010 → 28 Jan 2010

Conference

Conference	Fiber Lasers VII: Technology, Systems, and Applications
Country/Territory	United States
City	San Francisco, CA
Period	25/01/10 → 28/01/10

Keywords

Diode laser arrays
Microoptics
Slow-axis collimation
Smile correction

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10.1117/12.842197

Cite this

@inproceedings{154998928dea4d23ab05d58269432eab,

title = "Demonstration of high pointing accuracy, dual-axis collimation of 49 emitter diode bar using a laser-written custom phase-plate",

abstract = "We present our work on a single optical component that combines fast-axis smile and lens error correction with slowaxis collimation, produced with a laser-cut phase-plate technique. Customized focal length of slow-axis lenses allows optimization of fill-factor of diode laser bars. In this paper we report on excellent beam properties obtained for a 49- single mode emitter array, 975 nm bar providing 30W cw output, with RMS pointing error of 3% and 6% of far-field divergence in fast- and slow-axis, respectively. We observed a pitch mismatch of 0.03% between the slow-axis lens array, with emitter pointing clearly affected by chip thermal expansion. {\textcopyright} 2010 Copyright SPIE - The International Society for Optical Engineering.",

keywords = "Diode laser arrays, Microoptics, Slow-axis collimation, Smile correction",

author = "Natalia Trela and Baker, {Howard J.} and Wendland, {Jozef J.} and Hall, {Denis R.}",

year = "2010",

doi = "10.1117/12.842197",

language = "English",

isbn = "9780819479792",

volume = "7583",

booktitle = "High-Power Diode Laser Technology and Applications VIII",

note = "Fiber Lasers VII: Technology, Systems, and Applications ; Conference date: 25-01-2010 Through 28-01-2010",

}

Trela, N, Baker, HJ, Wendland, JJ & Hall, DR 2010, Demonstration of high pointing accuracy, dual-axis collimation of 49 emitter diode bar using a laser-written custom phase-plate. in High-Power Diode Laser Technology and Applications VIII. vol. 7583, Fiber Lasers VII: Technology, Systems, and Applications, San Francisco, CA, United States, 25/01/10. https://doi.org/10.1117/12.842197

TY - GEN

T1 - Demonstration of high pointing accuracy, dual-axis collimation of 49 emitter diode bar using a laser-written custom phase-plate

AU - Trela, Natalia

AU - Baker, Howard J.

AU - Wendland, Jozef J.

AU - Hall, Denis R.

PY - 2010

Y1 - 2010

N2 - We present our work on a single optical component that combines fast-axis smile and lens error correction with slowaxis collimation, produced with a laser-cut phase-plate technique. Customized focal length of slow-axis lenses allows optimization of fill-factor of diode laser bars. In this paper we report on excellent beam properties obtained for a 49- single mode emitter array, 975 nm bar providing 30W cw output, with RMS pointing error of 3% and 6% of far-field divergence in fast- and slow-axis, respectively. We observed a pitch mismatch of 0.03% between the slow-axis lens array, with emitter pointing clearly affected by chip thermal expansion. © 2010 Copyright SPIE - The International Society for Optical Engineering.

AB - We present our work on a single optical component that combines fast-axis smile and lens error correction with slowaxis collimation, produced with a laser-cut phase-plate technique. Customized focal length of slow-axis lenses allows optimization of fill-factor of diode laser bars. In this paper we report on excellent beam properties obtained for a 49- single mode emitter array, 975 nm bar providing 30W cw output, with RMS pointing error of 3% and 6% of far-field divergence in fast- and slow-axis, respectively. We observed a pitch mismatch of 0.03% between the slow-axis lens array, with emitter pointing clearly affected by chip thermal expansion. © 2010 Copyright SPIE - The International Society for Optical Engineering.

KW - Diode laser arrays

KW - Microoptics

KW - Slow-axis collimation

KW - Smile correction

U2 - 10.1117/12.842197

DO - 10.1117/12.842197

M3 - Conference contribution

SN - 9780819479792

VL - 7583

BT - High-Power Diode Laser Technology and Applications VIII

T2 - Fiber Lasers VII: Technology, Systems, and Applications

Y2 - 25 January 2010 through 28 January 2010

ER -

Demonstration of high pointing accuracy, dual-axis collimation of 49 emitter diode bar using a laser-written custom phase-plate

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