WebThe SH signal was continuously observed in the step-chirped PPLN waveguides while scanning the wavelength of the pump laser from 1550 nm to 1660 nm. The SH … WebBroadband dual-comb spectrum obtained with two chirped waveguide PPLNs. The covered span is 1640 cm-1 (2250 – 3890 cm-1), corresponding to 245,000 teeth at 200 MHz resolution. The bottom panels show the molecular spectra after performing a baseline correction; the broad spectral span covered within one single measurement...

Advanced RPE PPLN Waveguide Applications: Beyond SHG …

WebMay 12, 2024 · By using step-chirped periodically poled MgO: LN (SC-PPMgO: LN) crystal, we obtained output wavelengths in the range of 593–599 nm tunable by varying the position of focused Gaussian beam inside the 20-mm crystal and by temperature. Up to 4.3 mW CW output power at 597 nm was realized corresponding to 0.87% normalized conversion … WebPeriodically poled lithium niobate (PPLN) structures on a chip enable efficient second-order nonlinear optical effects, benefiting from the tight light confinement and the utilization of d33.... birdlife malta facebook

46 nm Frequency Conversion with Chirp Grating PPLN Waveguide …

WebWe present a programmable picosecond laser tunable over 23 nm around 777 nm from a dispersion-tuned mode-locked 1554 nm fiber laser converted through a wideband pigtailed chirped Periodically-Poled Lithium Niobate waveguide with 50% power efficiency. WebAug 4, 2024 · However, the conversion efficiency will consequently decrease dramatically because it is quadratically proportional to the crystal length. Other methods have been proposed to use aperiodically poled PPLN [8, 9] or chirped PPLN . However, despite a theoretically estimated large bandwidth of 1045.9 nm centered at 3.5 μm, the effective … Web(a) Firstly, cut 3-inch support and PPLN wafers into bulk crystals with the same size. Second, the ridge waveguide and groove are fabricated on the PPLN and support crystals, respectively. Third, glue the PPLN with ridge waveguide and the support piece with groove into a single bulk structure. birdlife murray goulburn