Browsing by Keywords "Optical pumping"
Now showing items 1-16 of 16
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1 mJ pulse bursts from a Yb-doped fiber amplifier
(Optical Society of America, 2012-05)We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier capable of generating 60 μJ pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel ... -
Advances in femtosecond single-crystal sum-frequency generating optical parametric oscillators
(IEEE, 1998)The effect of compensating the group velocity mismatch between the orthogonal pump components on the conversion efficiency of the optical parametric oscillators (OPOs) was investigated. A femtosecond single-crystal ... -
Comparison of terahertz technologies for detection and identification of explosives
(SPIE, 2014)We present results on the comparison of different THz technologies for the detection and identification of a variety of explosives from our laboratory tests that were carried out in the framework of NATO SET-193 THz ... -
Fiber amplification of pulse bursts up to 20 μj pulse energy at 1 kHz repetition rate
(Optical of Society of America, 2011-08-23)We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier. Groups of pulses with a temporal spacing of 10 ns and 1 kHz overall repetition rate are amplified to an average pulse energy of ... -
Generation of dissipative solitons in normal-dispersion Raman fiber laser
(Institute of Electrical and Electronics Engineers Inc., 2016)Dissipative soliton pulses in a synchronously pumped all-normal-dispersion Raman fiber laser is presented theoretically and experimentally. The laser generates 7.1 nJ intra-cavity pulses at 1.12 μm and is compressed to 136 ... -
Generation of Sub-20-fs Pulses From a Graphene Mode-Locked Laser
(OSA - The Optical Society, 2017)We demonstrate, what is to our knowledge, the shortest pulses directly generated to date from a solid-state laser, mode locked with a graphene saturable absorber (GSA). In the experiments, a low-threshold diode-pumped ... -
Graphene mode-locked Cr:LiSAF laser at 850 nm
(OSA - The Optical Society, 2015)We report, for the first time to our knowledge, a mode-locked femtosecond Cr:LiSAF laser initiated with a high-quality monolayer graphene saturable absorber (GSA), synthesized by chemical-vapor deposition. The tight-focusing ... -
Graphene mode-locked femtosecond Cr: LiSAF laser
(Optical Society of America (OSA), 2015)We report the first demonstration of femtosecond pulse generation from a Cr:LiSAF laser mode-locked with a monolayer graphene saturable absorber. Nearly transform-limited 72-fs pulses were generated at 850 nm with only two ... -
Influence of modulation of pump and seed signals on fiber amplification of broadband pulses
(2011)We report on characterization of the transfer of pump and seed signal modulations, including noise, during fiber amplification. We demonstrate experimentally and theoretically that pump (signal) modulations are transferred ... -
Influence of pump noise and modulation on in-fiber amplification of broadband pulses
(Optical Society of America, 2011)We investigate experimentally and theoretically the coupling of pump laser modulation and noise fluctuations to the output power of a fiber amplifier for broadband pulse trains using the modulation transfer function approach. ... -
Low-threshold optical gain and lasing of colloidal nanoplatelets
(Institute of Electrical and Electronics Engineers Inc., 2014)Semiconductor nanocrystals, which are also known as colloidal quantum dots (CQDs), are highly attractive materials for high performance optoelectronic device applications such as lasers. With their size, shape and composition ... -
Multimode pumping of optical parametric oscillators
(Institute of Electrical and Electronics Engineers, 1996-02)Calculations suggest that optical parametric oscillators (OPO's) can be efficiently pumped using multimode, divergent pump sources. The influence of pump beam divergence and mode structure upon OPO performance is measured ... -
Nonlinearity-tailored fiber laser technology for low-noise, ultra-wideband tunable femtosecond light generation
(OSA - The Optical Society, 2017)The emission wavelength of a laser is physically predetermined by the gain medium used. Consequently, arbitrary wavelength generation is a fundamental challenge in the science of light. Present solutions include optical ... -
Simultaneous optical parametric oscillation and sum-frequency generation within a single crystal for converting 1064 nm into 627 nm
(2005)We report a 1064-nm pumped optical parametric oscillator based on a single KTiOAsO4 crystal that simultaneously generates the sum frequency of the pump and signal wavelengths, providing a 627 nm output with a high conversion ... -
Single-crystal sum-frequency generating optical parametric oscillator
(IEEE, Piscataway, NJ, United States, 1997)A sum-frequency generating optical parametric oscillator (OPO), where a single crystal is employed for both parametric oscillation and sum frequency generation, is presented. The OPO is based on a KTiOPO4 crystal that is ... -
Type-tunable amplified spontaneous emission from core-seeded CdSe/CdS nanorods controlled by exciton-exciton interaction
(Royal Society of Chemistry, 2014)Type-tunable optical gain performance of core-seeded CdSe/CdS nanorods is studied via two-photon optical pumping. Controlling the exciton-exciton interaction by varying the core and shell size, blue-shifted and red-shifted ...
