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.
An inhomogenous quantum-cascade structure based on two bound-to-continuum designs was used as gain element in a grating-coupled external cavity laser. This laser was tunable from 8.2 to 10.4 mum in pulsed mode on a thermoelectric cooler.
We discuss carefully characterized semiconductor disk lasers with high spatial and spectral homogeneity, exhibiting 23% conversion efficiency and a 540-mW output power for cw operation. Passive mode-locking with 1.5-ps pulse duration is also demonstrated.
Slow and fast light are achieved using novel master-modulated injection-locked 1.55 mum VCSELs at room-temperature. We achieve a full RF phase change of 2pi at >10 GHz over a wide bandwidth ~8 GHz.
We report on active Q-switching of AlGaAs/GaAs VCSELs with In0.16Ga0.84As MQW active region and absorber. Pulse widths of 40 ps at repetition rates of 4 GHz were measured at 5 dBm incident RF power.
We describe a beam cleanup setup to convert a multimode beam into a singlemode beam by stimulated-Brillouin-scattering in a multimode gradient-index fiber. A M2=6.5 beam is converted into a M2=1.3 beam with 31% efficiency.
A discrete mode Fabry-Perot laser is designed and fabricated to achieve two-color lasing. We demonstrate beating between the two laser modes and self-pulsation at 480 GHz.
We present for the first time a Nd:YVO4 laser emitting at 1064-nm intracavity pumped by a 914-nm diode-pumped Nd:YVO4 laser. Intracavity sum-frequency operation is realized to reach blue range. We obtained 67-mW at 492-nm.
The intracavity gain dynamics of an external cavity semiconductor mode-locked laser are measured, showing how pulses corresponding to different wavelengths are temporally skewed, leading to a slow gain depletion avoiding nonlinearities, which enables multiwavelength operation.
A Si laser with a Si micro-disk evanescently coupled to a III-V gain medium is proposed. The III-V also functions as a DBR at the gain wavelength to minimize the perturbation of the cavity mode.
We demonstrate the monolithic integration of a VCSEL half-cavity and a single-layer sub-wavelength grating as its top mirror. Polarization-selective amplified stimulated emission with selection ratio of 20 dB was obtained.
Generation of a chirped comb with chirp rate of 85 PHz/s across 130 GHz from a frequency-shifted feedback ring laser with semiconductor optical amplifier as gain medium is reported. Electronic tunability from 1535 to 1580 nm was measured.
We report a novel method for high-energy, few-cycle pulse generation through the combination of parametric amplification and enhancement cavities. Dispersion in the cavity ceases to be a concern with the use of long pump pulses.
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.