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We report a 7-stage narrow-ridge interband-cascade laser emitting at λ ≈ 3.5 µm that produces up to 592 mW of cw power, with a wallplug efficiency of 10.1% and M2 = 3.7 at T = 25 °C.
We demonstrate butt-coupling of a 3.4 μm interband cascade laser into a 3.7 μm thick by 7 μm wide GeSbS chalcogenide ridge waveguide and measure a total insertion loss of −28 dB.
A 3-mm-long, 150-mum-wide broad-area quantum cascade laser (lambda = 4.65 mum) with sidewall corrugations produced a maximum-current-limited pulsed output power of 53 W and wall-plug efficiency of 29.4% from two facets at 80 K. The processing was applied to a structure which employed a Ga0.33In0.67As/Al0.64In0.36As strain-compensated double-phonon design with the injection barrier thinned in order...
A novel single crystalline silicon diamond-shaped atomic force microscope (AFM) cantilever for accurate mechanical tests of MEMS structures is presented. A strip bending test of micromachined gold thin film strip specimens has been performed using the proposed AFM cantilever. The experimental results show that a more accurate and uniform bending test is possible with this new cantilever by suppressing...
The ICL performance has improved dramatically in recent years, with maximum cw operating temperatures of 264 and 269 K being reported by the groups at JPL and NRL, respectively. Narrow ridges were quite recently fabricated from the latest ICL wafers, using epitaxial-side-up mounting topped by Au-electroplating to enhance the heat removal. The longer-wavelength ICL operated cw to 229 K, which is considerably...
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