Wavelength-tuning interferometry of intraocular distances
... gain margins of the cavity modes have to be rearranged or the frequency of the cavity modes must be shifted. Several techniques such as distributed Bragg reflector lasers, multisection distributed feedback lasers, multiple-cavity lasers, external-cavity lasers, and filter techniques23 have been deve ...
... gain margins of the cavity modes have to be rearranged or the frequency of the cavity modes must be shifted. Several techniques such as distributed Bragg reflector lasers, multisection distributed feedback lasers, multiple-cavity lasers, external-cavity lasers, and filter techniques23 have been deve ...
“Pixel” team
... We are now willing to install a new instrument combining improved versatility, multiple beam alignment capability and stability. This instrument is based on two objectives instead of three in the previous versions. The change in design from three to two objectives necessitates the simultaneous coupl ...
... We are now willing to install a new instrument combining improved versatility, multiple beam alignment capability and stability. This instrument is based on two objectives instead of three in the previous versions. The change in design from three to two objectives necessitates the simultaneous coupl ...
Optical decay from a Fabry-Perot cavity faster than the decay time
... the stabilization of laser sources [1,2]. A novel application for high-finesse cavities was proposed in the early 90’s in the upcoming field of cavity-QED: Single atoms are strongly coupled to a cavity-stored photon field such that the mutual coherent oscillatory exchange between both sub-systems is ...
... the stabilization of laser sources [1,2]. A novel application for high-finesse cavities was proposed in the early 90’s in the upcoming field of cavity-QED: Single atoms are strongly coupled to a cavity-stored photon field such that the mutual coherent oscillatory exchange between both sub-systems is ...
ps fiber laser for CARS-authorproof-v2
... With up to 14 W of pump power, up to 6 W is obtained from the amplifier. The beam quality is good: M2 = 1.1 is measured. The spectra of the amplified pulses at different output powers are shown in Fig. 2(c). For powers above ~2 W the spectrum begins to distort. At 6 W the spectrum has broadened by ...
... With up to 14 W of pump power, up to 6 W is obtained from the amplifier. The beam quality is good: M2 = 1.1 is measured. The spectra of the amplified pulses at different output powers are shown in Fig. 2(c). For powers above ~2 W the spectrum begins to distort. At 6 W the spectrum has broadened by ...
A| ω - Enrico Rubiola
... laser adiabatically, slowly enough that the standing wave inside the cavity was always in equilibrium with the incident beam. We can express this in the quantitative model by making ! very small. In this regime the expression ...
... laser adiabatically, slowly enough that the standing wave inside the cavity was always in equilibrium with the incident beam. We can express this in the quantitative model by making ! very small. In this regime the expression ...
High-power passively mode-locked semiconductor lasers
... bow-tie amplifier geometries [4]. Such techniques increase the complexity of the system and are still currently limited to average powers well below 1 W. In recent years, it has been discovered that semiconductor lasers with surface-emitting geometries allow for much larger mode areas, particularly ...
... bow-tie amplifier geometries [4]. Such techniques increase the complexity of the system and are still currently limited to average powers well below 1 W. In recent years, it has been discovered that semiconductor lasers with surface-emitting geometries allow for much larger mode areas, particularly ...
Time-resolved atomic inner-shell spectroscopy
... hole is not stable, so the system tends to minimize its energy by filling the vacancy with an electron from an outer shell (see process b in Fig. 1a). The excess binding energy W h 2 W 1 is either carried away by an extreme ultraviolet or X-ray fluorescence photon or transferred via electrostatic fo ...
... hole is not stable, so the system tends to minimize its energy by filling the vacancy with an electron from an outer shell (see process b in Fig. 1a). The excess binding energy W h 2 W 1 is either carried away by an extreme ultraviolet or X-ray fluorescence photon or transferred via electrostatic fo ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... to form a band gap in a single direction .A Bragg grating is an example of this type of photonic crystal .This type of photonic crystal systems exhibits three important phenomena i) Photonic Band gap , ii)Localized mode iii) surface state ,because the index contrast is only along one direction , the ...
... to form a band gap in a single direction .A Bragg grating is an example of this type of photonic crystal .This type of photonic crystal systems exhibits three important phenomena i) Photonic Band gap , ii)Localized mode iii) surface state ,because the index contrast is only along one direction , the ...
Time-resolved atomic inner
... hole is not stable, so the system tends to minimize its energy by filling the vacancy with an electron from an outer shell (see process b in Fig. 1a). The excess binding energy W h 2 W 1 is either carried away by an extreme ultraviolet or X-ray fluorescence photon or transferred via electrostatic fo ...
... hole is not stable, so the system tends to minimize its energy by filling the vacancy with an electron from an outer shell (see process b in Fig. 1a). The excess binding energy W h 2 W 1 is either carried away by an extreme ultraviolet or X-ray fluorescence photon or transferred via electrostatic fo ...
Photonic laser thruster
A photonic laser thruster is an amplified laser thruster that generates thrust directly from the laser photon momentum, rather than laser-heating propellant. The concept of single-bounce laser-pushed lightsails that utilize the photon momentum was first developed in the 1960s, however, its conversion of laser power to thrust is highly inefficient, thus has been considered impractical. Over 50 years, there had been numerous theoretical and experimental efforts to increase the conversion efficiency by recycling photons, bouncing them repetitively between two reflective mirrors in an empty optical cavity, without success. In December 2006, Young Bae successfully solved this problem and demonstrated the conversion efficiency enhancement by a factor of 100 and a photon thrust of 35 micronewtons by putting the laser energizing media between the two mirrors as in typical lasers, and the photonic laser thruster was born. In August 2015, the photonic laser thruster was demonstrated to increase the conversion efficiency enhancement by a factor over 1,000 and to achieve a photon thrust of 3.5 millinewtons at Y.K. Bae Corporation. In addition, Propelling, slowing and stopping of a small satellite, 1U CubeSat, in simulated zero-gravity were demonstrated. The photonic laser thruster was initially developed for use in nanometer precision spacecraft formation, for forming ultralarge space telescopes and radars. The photonic laser thruster is currently developed for high-precision and high-speed maneuver of small spacecraft, such as formation flying, orbit adjustments, drag compensation, and rendezvous and docking. The photonic laser thruster can be used for beaming thrust from a conventional heavy resource vehicle to a more expensive & lightweight mission vehicle, similar to tankers in aerial refueling.The practical usage of the photonic laser thruster for main space propulsion would require extremely high laser powers and overcoming technological challenges in achieving the laser power and fabricating the required optics. Photonic laser thrusters have a very high specific impulse, and can permit spacecraft reach much higher speeds than with conventional rockets, which are limited by the Tsiolkovsky rocket equation. If the photonic laser thruster is scalable for the use in such main space propulsion, multiple photonic laser thrusters can be used to construct a 'photonic railway' that has been proposed as a potential permanent transport infrastructure for interplanetary or interstellar commutes, allowing the transport craft themselves to carry very little fuel.