The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Amplified femtosecond laser pulses are coupled through a hollow-core photonic band-gap fiber with efficiencies greater than 98%. Peak power intensities greater than 1014 W/cm2 are achieved inside the fiber core.
We demonstrate nonlinear compression of 2.5 ps and 1.2 ps laser pulses at 800 nm wavelength using a 35 m tapered hollow-core photonic bandgap fiber with continuously-decreasing dispersion.
We report on the fabrication of a tapered hollow-core photonic crystal fiber with a transition-length as long as 40 m for cascaded Stimulated-Raman-Scattering applications. The structural and optical characterization demonstrates the linearity of the taper.
We report on a technique to pattern the shape of the core surround of hollow-core PCF. Different shapes were fabricated and a relationship between surface mode positions and core surround thickness is experimentally observed.
A new kind of hollow core photonic crystal fiber (HC-PCF) for broadband guidance is introduced. Structural and optical properties of a fabricated example are detailed.
We generate a highly-controlled, optically-dense, and repeatable Rb vapor inside of a hollow-core photonic bandgap fiber using light-induced atomic desorption. Here we present its generation dynamics and use for nonlinear quantum optical applications.
We demonstrate broadband 1.0-2.4 mum infrared supercontinuum generation with 0.4 mW output, using single-mode and few-mode tellurite holey fibers with very large mode area, of up to 3000 mum2.
Saturated absorption spectroscopy in acetylene-filled, 19-cell kagome-structured hollow core photonic crystal fiber is investigated. The large core size of 70 mum allows for narrow sub-Doppler features, and the wavelength-insensitive transmission is suitable for frequency measurements.
An interferometric multiplex coherent anti-Stokes scattering (iMCARS) system that utilizes the supercontinuum of a photonic crystal fiber as both the Stokes and local oscillator sources for broadband heterodyne detection is demonstrated.
We simulate the director structure of all capillaries in a biased photonic crystal fiber infiltrated with liquid crystals. Various mode simulations for different capillaries show the necessity to consider the entire structure.
Methods to insert, keep and fix silver and gold nanoparticles to the inner walls of microstructured fibers are demonstrated. Fibers optimized for evanescent field interaction were employed and can result in efficient plasmonic chemical sensing.
We designed and fabricated simple-structure HAFs having lambda0 in a 1.0 mum band as well as low confinement loss and single mode operation over wide range of wavelengths. The developed HAFs showed high non-linearity and good connectivity.
We observe the effects of anti-crossing events between core and core interface guided modes of a HC-PCF, by monitoring the output of the fiber as the coupled laser is scanned in wavelength.
Large pitch square-lattice hollow core photonic crystal fibers have been fabricated. Measurements show that the fiber exhibits similar optical linear properties to the Kagome fiber.
We present the first characterization of cladding modes of a low-index contrast all-solid photonic bandgap fiber using an acousto-optic long-period grating. Near field modal measurements and theoretical calculations reveal unique cladding mode properties.
Influence of the effective area spectral dependence on midinfrared supercontinuum generation is demonstrated. The behaviors of photonic crystal and step index fibers is compared. A 700nm width reduction is shown in step index ZBLAN fibers.
We describe how to extend the bandwidth of the supercontinuum generated in uniform fibers pumped at 1064 nm. The spectra extend to ~400 nm, some 50 nm deeper into the blue than previously with the same pump source.
The output power from spontaneous gas-phase Raman scattering is enhanced using a hollow-core photonic crystal fiber for the gas cell and Stokes light collector, yielding >100 times enhancement over a free-space configuration.
We report a sensitive evanescent field sensor using air-suspended solid-core fibers. Excellent agreement between measured and calculated mode profiles allows us to measure quantitative broadband absorption spectra with sample volumes as low as 1 muL.
We report on preparation, joining and packaging of photonic crystal fibers for high power applications. Fusion splices of air-clad fibers with losses down to 0.03 dB and a transmitted pump power of 3.2 kW are obtained.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.