Abstract Erbium doped integrated waveguide amplifier and laser prevail in power consumption, footprint, stability scalability over the counterparts bulk materials, underpinning lightwave communication large-scale sensing. Subject to highly confined mode micro-to-nanoscale moderate propagation loss, gain scaling such devices prove be more challenging compared their counterparts. In this work, a ...

A cryogenically cooled Yb:YLF laser with 224-W output power at 995 nm, linearly polarized along the c-axis, has been demonstrated, and laser oscillation has also been obtained polarized along the a-axis. The beam quality had an M ~ 1.1 at 60-W output and M ~ 2.6 at 180-W output for c-axis polarization. This level of average power is approximately two orders of magnitude higher than demonstrated...

Abstract. This work describes a novel scheme that applies a Sprott master/slave chaotic synchronization system to secure transmission. A sliding plane is chosen to design a sliding mode controller to ensure robustness. In the presence of an external disturbance and system uncertainty, the slave chaotic circuit system is then synchronized with the master. The Lyapunov theorem verifies that the p...

We demonstrate a four-stage optical parametric chirped-pulse amplification system that delivers carrier-envelope phasestable ~1.5 μm pulses with energies up to 12.5 mJ before recompression. The system is based on a fusion of femtosecond diode-pumped solid-state Yb technology and a picosecond 100 mJ Nd:YAG pump amplifier. Pulses with 62 nm bandwidth are recompressed to a 74.4 fs duration close t...

LLE Review, Volume 91 103 Introduction The OMEGA facility is LLE’s 60-beam, 30-kJ (UV) laser system for performing inertial confinement fusion (ICF) experiments. One of the main features of the OMEGA laser is a flexible optical pulse–shaping system1 that produces 0.1to 5-ns, complex-shaped, low-energy pulses that must be amplified to ~1-mJ level before being injected into power amplifiers. Rege...

4He (2 3Si) metastable atoms are optically pumped with intensity modulated light The use of a single mode diode-pumped LNA laser as the pumping source, allows the study of resonance signals predicted'by the optical pumping theory but not yet observed Resonances are detected on the transmitted pumping beam at the modulation frequency and its harmonics Application of this method to high sensitivi...

We report cw and femtosecond laser operations under diode pumping of a diffusion-bonding heterocomposite Yb-doped crystal: Yb:SrY4sSiO4d3O iY2Al5O12sYAGiSYS:Ybd. To show the advantages of this heterocomposite crystal over classical Yb:SYS crystal, we first investigate the high-power cw regime. A cw power of 4.3 W is demonstrated. The femtosecond regime is also investigated, and 1-W-average-powe...

Oxygen is not only important which people rely on but also one type of important industrial gas. Considering that there are some disadvantages of traditional methods to measure the oxygen concentration, the tunable diode laser absorption spectroscopy is researched in this paper combined with the phase-lock amplify technique. This method combines the high power, good monochrome, wavelength tuned...

We propose and experimentally demonstrate a continuous wave (CW) tunable-wavelength fiber laser using self-seeding Fabry-Perot laser diode (FP-LD) without optical amplifier inside gain cavity. By employing a tunable bandpass filter (TBF) and a fiber reflected mirror (FRM) within a gain cavity, the fiber laser can lase a single-longitudinal wavelength due to the self-seeding operation. The propo...