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We summarize recent progress in low-cost and highly-efficient Cr:Colquiriite laser technology. Pumping with inexpensive single-mode diodes, 270-mW of output power and a total tunability from 754 to 1042 nm were demonstrated in continuous-wave operation. In mode-locked operation, 100-fs pulses with 50-nJ pulse energy were demonstrated.
The optimization of phase distortion spectral power density is proposed as an alternative to GDD minimization of ultrafast cavity mirrors. This criterion is shown to minimize the detuning of cavity resonances from a uniform comb.
An octave spanning, self-referenced Ti:sapphire laser at 2 GHz repetition rate is demonstrated with a carrier-envelope beat note of 50 dB measured with 100 kHz resolution bandwidth.
Factors limiting the accuracy of a wideband optically sampled analog-to-digital converter are analyzed. An algorithm for adaptive error compensation in a post-processing step is proposed and shown to be effective against various system imperfections.
An optical parametric chirped pulse amplification system producing high-energy, few-cycle pulses at 2.0-mum wavelength with low superfluorescence noise background for high harmonic generation in gas jets is demonstrated.
An octave spanning carrier-envelope phase stabilized frequency comb is demonstrated using selective output coupling of the f and 2f frequency components, enabling use of the full output power of the laser.
We solve the periodic boundary value problem for a mode-locked laser cavity using a preconditioned matrix-implicit Newton-Krylov solver. Solutions are obtained two to three orders of magnitude faster than with standard tools.
Control of the carrier-envelope phase by a composite glass plate is demonstrated without changing chirp or energy of the transmitted pulses. The effect is verified intracavity employing an octave-spanning laser and external with an autocorrelator.
We present a new pulse characterization method based on two-dimensional spectral shearing interferometry with zero delay. It features simple calibration, greatly relaxed spectrometer resolution, and is well suited for few-cycle laser pulses.
This paper considers the effect of complex interactions in energy networks. In particular, we consider a system in which agents bid price and quantity to supply the market. We characterize the overall equilibrium problem, show that it may yield multiple equilibria, and describe extensions to more complex situations
Consistent stochastic orders of processing times and objective functions yield optimal policies in many stochastic scheduling problems. When these orders fail to hold, however, finding optimal values may be difficult. In this paper, we show how to bind these values in general situations including problems with unreliable machines and tardiness-based objectives.
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