Holographie fabricated photonic-crystal distributed-feedback quantum cascade laser with near-diffraction-limited beam quality

Quan Yong Lu; Wei Zhang; Li Jun Wang; Jun Qi Liu; Lu Li; Feng Qi Liu; Zhan Guo Wang

doi:10.1364/OE.17.018900

Holographie fabricated photonic-crystal distributed-feedback quantum cascade laser with near-diffraction-limited beam quality

Quan Yong Lu^*, Wei Zhang, Li Jun Wang, Jun Qi Liu, Lu Li, Feng Qi Liu, Zhan Guo Wang

^*Corresponding author for this work

Center for Quantum Devices (CQD)

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We demonstrate the fabrication and characterization of photonic-crystal distributed-feedback quantum cascade laser emitting at 4.7 urn. The tilted rectangular-lattice PCDFB structure was defined using a multi-exposure of two-beam holographic lithography. The devices exhibit the near-diffraction- limited beam emission with the full width at half maximum of the far-field divergence angles about 4.5° and 2.5° for stripe widths of 55 μm and 95 μm, respectively. Single-mode emission with a side mode suppression ratio of «20 dB is achieved in the temperature range (80-210 K). The single-facet output power is above 1 W for a 95 μm × 2.5 mm laser bar at 85 K in pulsed operation.

Original language	English (US)
Pages (from-to)	18900-18905
Number of pages	6
Journal	Optics Express
Volume	17
Issue number	21
DOIs	https://doi.org/10.1364/OE.17.018900
State	Published - Oct 12 2009

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Holographie fabricated photonic-crystal distributed-feedback quantum cascade laser with near-diffraction-limited beam quality",

abstract = "We demonstrate the fabrication and characterization of photonic-crystal distributed-feedback quantum cascade laser emitting at 4.7 urn. The tilted rectangular-lattice PCDFB structure was defined using a multi-exposure of two-beam holographic lithography. The devices exhibit the near-diffraction- limited beam emission with the full width at half maximum of the far-field divergence angles about 4.5° and 2.5° for stripe widths of 55 μm and 95 μm, respectively. Single-mode emission with a side mode suppression ratio of «20 dB is achieved in the temperature range (80-210 K). The single-facet output power is above 1 W for a 95 μm × 2.5 mm laser bar at 85 K in pulsed operation.",

author = "Lu, {Quan Yong} and Wei Zhang and Wang, {Li Jun} and Liu, {Jun Qi} and Lu Li and Liu, {Feng Qi} and Wang, {Zhan Guo}",

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AU - Li, Lu

AU - Liu, Feng Qi

AU - Wang, Zhan Guo

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