Sentence examples for facet coating from inspiring English sources
No facet coating was applied.
To date, these values were still very high for the low-threshold DFB-QCLs due to our high material quality and optimized reflectivity facet coating.
It is obvious from Fig. 4d that we achieve a stable single mode around different currents with optimized AR facet coating rather than mode hop in Fig. 4c.
It is believed that appropriate reflectivity facet coating can achieve stable single-mode operation at even high temperatures and large currents.
Although there are some researches devoted to facet coating, they always focus on forming optimal equivalent cavity length Lopt to preserve wall-plug efficiency (WPE) for lasers rather than the single-mode reliability [14, 15].
Our devices provided a single longitudinal mode with the maximum CW output power up to 48.8 mW/facet at 971.31 nm at 250 mA without facet coating, 3dB linewidth (<3.2 pm) and SMSR (>39 dB).
It is believed that the WPE can be further improved by the precise facets coating technology and the optimized active region structure such as shallow-well design.
Porous ZnO nanosheets with exposed {0 0 1} facets coated on Zn foils have been synthesized by annealing sheet-like Zn5(OH)8Cl2·H2O–Zn2OCl2·2H2O precursor coated on Zn foils at 400 °C for 60 min.
Both rear facet HR coating consisting of Al2O3/Ti/Au/Ti/Al2O3 (400/5/100/10/200 nm) and the front facet AR coating consisting of Al2O3/Ge (380/33 nm) are deposited by e-beam evaporation.
We designed the dielectric mirror at the grating facet instead of coating with the metal on the back wall of the grating facet.
The suppression of the cavity modes is typically achieved by tilting the waveguide with respect to the end facets and by providing the facets with an antireflection coating.
