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.
We propose a new technique for femtosecond pulse characterization — transient-grating self-referenced spectral interferometry. Using this technique, we built an extremely simple, alignment-free device and successfully sub-two-cycle 10-fs pulses at 1.75 μm.
Tunable multicolor femtosecond pulses were simultaneously obtained by a cascaded FWM process in fused silica glass. Frequency up-shift and down-shift pulses with energies about 1 muJ, durations of 45 fs sidebands were obtained.
Broadband two-dimensional multicolored array with more than nine periodic columns and more than ten rows was generated in a sapphire plate. The array structure was sensitive to the in-plane rotation of the sapphire plate.
Broadband 2D multicolored arrays with more than nine periodic columns and rows were generated in a sapphire plate. Each spot of the 2D arrays has a Gaussian spatial and spectral profile and less than 3.7% RMS power stability. 2D multicolored discrete solitons is expected to be obtained using this method.
17.4 fs ultraviolet pulses with 400 nJ energy were generated by sum frequency mixing of 805 nm pulses and ultra-broadband visible pulses. Angular dispersion was introduced to achieve broadband phase-matching.
In this paper cw laser oscillation is reported in the YbAG as the active material, and in the stoichiometric Yb-doped materials by pumping shorter wavelength than 1.0 alpham without direct pumping to the upper laser level. The YbAG has several advantages over the KYbW. The results also indicate a possibility of cw and high power laser oscillation by laser diode pumping of the stoichiometric YbAG by...
We have experimentally demonstrated quantum key distribution with a heralded single photon source and a photon number resolving detector. Numerical calculations have shown the expansion of the distance.
A new surface emitting dye laser is proposed for bio-optical detections in micro-TAS. The micro laser consists of a guided mode resonant grating made of dye doped PMMA. In an arbitrary area where the sub-wavelength grating is patterned, single-mode laser oscillation is obtained at the wavelength determined by the grating period
Highly efficient 1031-nm cw laser oscillation of Yb:YAG crystal has been realized at room temperature with the slope efficiency of 140% and the optical-to-optical efficiency of 89% for the absorbed pump power
A new scheme of the direct-detection Doppler lidar has been developed using an eye-safe ultraviolet laser for wind field measurement of the troposphere. High spatial-resolution and multidimensional measurements of wind field and other atmospheric parameters have been realized with the compact beam-scanning lidar system.
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.