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Proceedings Paper

Ultra-fine pitch individually addressable visible laser arrays for high speed digital printing applications
Author(s): O. P. Kowalski; S. D. McDougall; B. C. Qiu; G. H. Masterton; M. L. Armstrong; S. Robertson; S. Caldecott; J. H. Marsh
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Paper Abstract

An individually addressable visible semiconductor laser diode array with a 20 μm pitch is demonstrated that is highly suited for deployment in next-generation digital print systems. The array, operating at 660 nm, comprises 22 single mode lasers fabricated on a single GaInP/AlGaInP/GaAs substrate. The laser array is flip-chip bonded onto a patterned ceramic submount that enables the individual elements to be driven independently and is integrated into a 26-pin butterfly package. Arrays tested CW exhibit low threshold current (<20 mA per emitter), up to 50 mW output power per channel with a high slope efficiency (0.9 W/A) and a high characteristic temperature of over 100 K.

Paper Details

Date Published: 3 February 2009
PDF: 8 pages
Proc. SPIE 7230, Novel In-Plane Semiconductor Lasers VIII, 72301J (3 February 2009); doi: 10.1117/12.809088
Show Author Affiliations
O. P. Kowalski, Intense, Ltd. (United Kingdom)
S. D. McDougall, Intense, Ltd. (United Kingdom)
B. C. Qiu, Intense, Ltd. (United Kingdom)
G. H. Masterton, Intense, Ltd. (United Kingdom)
M. L. Armstrong, Intense, Ltd. (United Kingdom)
S. Robertson, Intense, Ltd. (United Kingdom)
S. Caldecott, Intense, Ltd. (United Kingdom)
J. H. Marsh, Intense, Ltd. (United Kingdom)


Published in SPIE Proceedings Vol. 7230:
Novel In-Plane Semiconductor Lasers VIII
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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