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We present a multiwavelength, time-division multiplexed laser that continuously cycles through 10 stable, tunable and spectrally narrow wavelengths at 30 kHz for absorption measurements in the R-branch of the v1+n3 band of H2O (1330-1380 nm).
We demonstrate what we believe to be the first demonstration of stable gain-switched 845-nm pulse generation by a weak modulated 1550-nm seed laser from an Er3+-doped fluoride fiber pumped by a CW 974 nm LD.
We report the first experimental observation of different forms of wavelength polarization switching and bistability with a 1550-nm VCSEL operated just above threshold and subject to orthogonally-polarised optical injection.
142 mW visible light with a tuning range of 5 nm were generated by frequency doubling of an external cavity broad-area laser diode using a PPLN waveguide crystal. A wall-plug efficiency of 5.9% was obtained.
We report experimental results on a laser based on a Nd:YCOB crystal cut as a sphere inserted between two plane mirrors. It is being used as a unique tool for the direct characterization of self-doubling.
External-cavity mode-locking of a quantum-dot laser is demonstrated with record-low repetition-rates of 310 MHz, and harmonic repetition-rates up to 4 GHz. Fourier-limited 930 fs pulse generation is achieved. The pulse-energy of ~0.45 pJ is independent of operating conditions.
We report multi-watt, TEM00 emission from a 2 mum Sb-based optically-pumped semiconductor disk laser utilising an intra-cavity diamond heat spreader for thermal management. An output power of 5 W and a wide tunability of over 160 nm are achieved.
Analysis of spectral condensation in a VECSEL with a near-antiresonant gain structure incorporating InGaAs/GaAsP quantum wells emitting around 1030 nm shows the effective FWHM gain bandwidth of this laser to be 32 nm.
We experimentally realized a diffractive unstable laser resonator with a Gaussian shaped outcoupled beam. The structured mirror is assembled with a VECSEL which produces a high beam quality even for the highest amplifier gain.
We demonstrate that optical pulse compression can be realized by tuning the quality factor of an optical microcavity from a high value to a low value, with tuning time shorter than the photon lifetime.
We have coherently combined a total power of 7.2 W CW using an individually addressable 10-element-array of 980-nm slab-coupled optical waveguide lasers (SCOWLs). The robust, passive phase-locking is accomplished using a fractional Talbot external cavity.
We present the first solitary mode-locked thin disk oscillator with cavity-dumping. The laser generates pulse energies of 3 muJ with pulse durations below 700 fs at 1 MHz repetition rate.
Directional dependence of optical radiation from photonic crystal double heterostructure resonant cavities is analyzed using the finite-difference time-domain method. Geometries that mitigate out-of-plane radiation loss with dielectric substrates are analyzed.
We have developed a compact, efficient, passively Q-switched, solid-state-laser, producing 7-mJ, < 10 ns pulses, and a near TEM00 beam. The cross section of the laser crystal was D-shaped and it was side pumped.
We experimentally measure optical squeezing at multiple longitudinal modes of an optical parametric amplifier. We present data up to 5.1 GHz that shows the magnitude of the squeezing is greater than observable at baseband.
Dynamical properties of mode-locked thin-disk lasers with cavity-dumping are studied with numerical simulations and experimental data. Limitations are identified, design criteria for future systems are deducted, and estimates of possible pulse energies given.
We report experimental and numerical results on the pulse dynamic of passively modelocked Yb-doped fiber laser operating in the chirped-pulse regime. A newly design cavity with a CFBG provides positive dispersion with negligible nonlinearity.
We report order-of-magnitude spectral breathing in a dispersion-managed Er-fiber laser with an intracavity bandpass filter. This is to our knowledge the highest of any laser reported. Pulse energy is 1.7 nJ, width is 110 fs.
Multisection-cavity gain measurements of quantum cascade lasers operating near room temperature are presented. In some devices clear evidence of Bloch gain is reported. A strain compensated 4.7 mum laser is also discussed.
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