High-brightness tapered laser diodes with photonic crystal structures

Yi Li; Weichuan Du; Zhou Kun; Songxin Gao; Yi Ma; Chun Tang

doi:10.1117/12.2315462

20 February 2018 High-brightness tapered laser diodes with photonic crystal structures

Yi Li, Weichuan Du, Zhou Kun, Songxin Gao, Yi Ma, Chun Tang

Proceedings Volume 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application; 106974Y (2018) https://doi.org/10.1117/12.2315462
Event: Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 2017, Nanjing, China

Abstract

Beam quality of tapered laser diodes is limited by higher order lateral mode. On purpose of optimizing the brightness of tapered laser diodes, we developed a novel design of tapered diodes. This devices based on InGaAs/AlGaAs asymmetry epitaxial structure, containing higher order lateral mode filtering schemes especially photonic crystal structures, which fabricated cost effectively by using standard photolithography and dry etch processes. Meanwhile, the effects of photonic crystal structures on mode control are also investigated theoretically by FDBPM (Finite-Difference Beam Propagation Method) calculation. We achieved a CW optical output power of 6.9W at 940nm for a single emitter with 4 mm cavity length. A nearly diffraction limited beam of M² ≈1.9 @ 0.5W has been demonstrated, and a highest brightness of β =75MW/(cm² ·sr) was reached.

Citation Download Citation

Yi Li, Weichuan Du, Zhou Kun, Songxin Gao, Yi Ma, and Chun Tang "High-brightness tapered laser diodes with photonic crystal structures", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106974Y (20 February 2018); https://doi.org/10.1117/12.2315462

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available