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Optical Engineering

External cavity cascade diode lasers tunable from 3.05 to 3.25  μm
Author(s): Meng Wang; Takashi Hosoda; Leon Shterengas; Gela Kipshidze; Ming Lu; Aaron Stein; Gregory Belenky
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Paper Abstract

The external cavity tunable mid-infrared emitters based on Littrow configuration and utilizing three stages type-I quantum well cascade diode laser gain elements were designed and fabricated. The free-standing coated 7.5-μm-wide ridge waveguide lasers generated more than 30 mW of continuous wave power near 3.25  μm at 20°C when mounted epi-side-up on copper blocks. The external cavity lasers (ECLs) utilized 2-mm-long gain chips with straight ridge design and anti-/neutral-reflection coated facets. The ECLs demonstrated narrow spectrum tunable operation with several milliwatts of output power in spectral region from 3.05 to 3.25  μm corresponding to ∼25  meV of tuning range.

Paper Details

Date Published: 14 September 2017
PDF: 5 pages
Opt. Eng. 57(1) 011012 doi: 10.1117/1.OE.57.1.011012
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Meng Wang, Stony Brook Univ. (United States)
Takashi Hosoda, Stony Brook Univ. (United States)
Leon Shterengas, Stony Brook Univ. (United States)
Gela Kipshidze, Stony Brook Univ. (United States)
Ming Lu, Brookhaven National Lab. (United States)
Aaron Stein, Brookhaven National Lab. (United States)
Gregory Belenky, Stony Brook Univ. (United States)

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