High average output power, dual-wavelength synchronously self-mode-locked Ho:LLF laser operating at 2068.5 and 2069.2 nm.

A dual-wavelength synchronously self-mode-locked Ho:LLF laser operating at 2068.5 and 2069.2 nm was demonstrated.

High-power, gigahertz repetition frequency self-mode-locked Ho:GdVO laser resonantly pumped by a Tm-doped fiber laser.

A self-mode-locked Ho:GdVO laser with the GHz pulse repetition frequency oscillation near 2.06 µm was demonstrated for the first time to our knowledge. The output performances of the self-mode-locked Ho:GdVO laser were investigated for a few output coupler transmittances at the pulse repetition frequency of 1.

Watt-level output power and near-diffraction-limit beam quality mid-infrared Ho:GdVO self-Raman laser at 2.5 µm.

We demonstrate an efficient active Q-switched Ho:GdVO self-Raman laser at 2500 nm for the first time, to our knowledge. Using Ho:GdVO crystal as the gain medium for both the 2048nm fundamental laser and the 2500 nm Raman laser, the output performances of a new mid-infrared self-Raman laser were investigated. The maximum average output power of 1.

Dual-wavelength passively Q-switched Ho:GdVO self-Raman laser operating at 2473 nm and 2520 nm.

A dual-wavelength passively Q-switched Ho:GdVO self-Raman laser in the 2.5 µm wave band was demonstrated with Cr:ZnS as a saturable absorber. Synchronized dual-wavelength pulsed laser outputs at 2473 nm and 2520 nm were acquired, corresponding to Raman frequency shifts of 808 cm and 883 cm, respectively.

Power balanced orthogonally polarized dual-wavelength Ho:GdVO laser with a difference frequency of 1 THz.

A power balanced orthogonally polarized dual-wavelength Ho:GdVO laser was demonstrated for the first time. Without inserting any other devices into the cavity, the power balanced simultaneous orthogonally polarized dual-wavelength laser at π-polarization 2048nm and σ-polarization 2062nm was successfully achieved. At the absorbed pump power of 14.

Compact dual-crystal Tm,Ho:YLF laser with balanced orthogonal polarization output power.

The compact dual-crystal orthogonally polarized Tm,Ho:YLF laser with balanced orthogonal polarization output power was reported for the first time, to the best of our knowledge. Two pieces of a-cut Tm,Ho:YLF crystals were placed compactly with their c-axis perpendicular. The maximum multimode total output power of 460 mW was obtained with the slope efficiency of 28.

Theoretical and experimental investigation of polarization coexistence and switching in an optical bistability Tm,Ho:LLF laser.

We first investigate the polarization coexistence and switching between the orthogonal π- and σ-polarization states in a free running optical bistability Tm,Ho:LLF laser. The output performances of the optical bistability Tm,Ho:LLF laser is numerically simulated, based on a new rate equation theory model taking into account the influences of polarization-dependent gain and losses. The simulation results show the polarization coexistence and switching of output laser in the process of decreasing pump power.

Cr:ZnS saturable absorber passively Q-switched mode-locking Tm,Ho:LLF laser.

We first report on a diode-end-pumped passively Q-switched mode-locking Tm,Ho:LLF laser at 2053 nm by using a Cr:ZnS saturable absorber. A stable Q-switched mode-locking pulse train with a nearly 100% modulation depth was achieved. The repetition frequency of the Q-switched pulse envelope increased from 0.

Ordering Ag nanowire arrays by spontaneous spreading of volatile droplet on solid surface.

Large-area Ag nanowires are ordered by spontaneous spreading of volatile droplet on a wettable solid surface. Compared with other nanowires orientation methods, radial shaped oriented Ag nanowires in a large ring region are obtained in an extremely short time. Furthermore, the radial shaped oriented Ag nanowires are transferred and aligned into one direction.