Ultra-Fine Pitch Individually Addressable Visible Laser Arrays for High Speed Digital Printing Applications

Kowalski, O.P., McDougall, S.D., Qui, B., Masterton, G.H., Armstrong, M.L., Robertson, S., Caldecott, S. and Marsh, J. (2009) Ultra-Fine Pitch Individually Addressable Visible Laser Arrays for High Speed Digital Printing Applications. In: Novel In-Plane Semiconductor Lasers VIII, San Jose, CA, 26 January 2009, (doi: 10.1117/12.809088)

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.

• Item Type: Conference Proceedings
• Additional Information: Proc SPIE, vol. 7230, 2009
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Marsh, Professor John
• Authors: Kowalski, O.P., McDougall, S.D., Qui, B., Masterton, G.H., Armstrong, M.L., Robertson, S., Caldecott, S., and Marsh, J.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering