Ultra-high contrast frontend for high peak power fs-lasers at 1030 nm

Single-shot measurement of >1010 pulse contrast for ultra-high peak-power lasers

Real-time pulse-contrast observation with a high dynamic range is a prerequisite to tackle the contrast challenge in ultra-high peak-power lasers. However, the commonly used delay-scanning cross-correlator (DSCC) can only provide the time-consumed measurements for repetitive lasers. Single-shot cross-correlator (SSCC) becomes essential in optimizing laser systems and exploring contrast mechanis...

High-Resolution Frequency Standard at 1030 nm For Yb:YAG Solid-State Lasers

High-peak-power efficient edge-emitting photonic crystal nanocavity lasers.

Record-high edge-emitted peak power was collected from L3 and finite-waveguide two-dimensional photonic crystal nanocavity quantum well membrane lasers at room temperature under single-mode operations. Peak power levels of 230 microW and 540 microW were collected from L3 and finite-waveguide edge-emitters, and their quantum differential efficiencies are 11% and 27%, respectively, limited by the...

Laser-induced damage thresholds of bulk and coating optical materials at 1030  nm, 500  fs.

We report on extensive femtosecond laser damage threshold measurements of optical materials in both bulk and thin-film form. This study, which is based on published and new data, involved simple oxide and fluoride films, composite films made from a mixture of two dielectric materials, metallic films, and the surfaces of various bulk materials: oxides, fluorides, semiconductors, and ionic crysta...

Numerical study of high-index-contrast Er:LiNbO3 photonic wire lasers optically pumped at 980 nm.

For the first time [to our best knowledge] a high-index-contrast z-cut Er:LiNbO(3) photonic wire waveguide laser, optically pumped at 980 nm wavelength, is designed for continuous-wave operation. Waveguide modes and laser characteristics are numerically computed using a developed full vectorial finite-element method based tool. In order to maximize the output power of the laser, the active cavi...