Observation of two-photon emission from semiconductors
... despite the fact that one-photon oscillator strength is much larger, at high seed intensities two-photon gain can become the dominant process. The unwanted one-photon lasing can also be prevented by designing cavities for the two-photon wavelengths only, which do not support any one-photon wavelengt ...
... despite the fact that one-photon oscillator strength is much larger, at high seed intensities two-photon gain can become the dominant process. The unwanted one-photon lasing can also be prevented by designing cavities for the two-photon wavelengths only, which do not support any one-photon wavelengt ...
The color of shock waves in photonic crystals Abstract Evan J. Reed,
... properties are required for many all-optical signal processing schemes and all quantum information processing and transport schemes. Photonic crystals[1–5], or periodic dielectric media, are a promising and versatile way to control the propagation of electromagnetic radiation. In this paper, we cons ...
... properties are required for many all-optical signal processing schemes and all quantum information processing and transport schemes. Photonic crystals[1–5], or periodic dielectric media, are a promising and versatile way to control the propagation of electromagnetic radiation. In this paper, we cons ...
Optical and Quantum Communications
... background light. We are developing a pump source at 390 nm by means of an amplified erbiumdoped fiber laser at 1560 nm followed by frequency quadrupling. We have built a picosecond erbium-doped fiber ring laser using a saturable absorber mirror to provide cw passive mode locking. After amplificatio ...
... background light. We are developing a pump source at 390 nm by means of an amplified erbiumdoped fiber laser at 1560 nm followed by frequency quadrupling. We have built a picosecond erbium-doped fiber ring laser using a saturable absorber mirror to provide cw passive mode locking. After amplificatio ...
Chapter 3: Electronic Spectroscopy I
... the atom being near the extremities of its vibrational motion. Hence there is some chance of the transition starting from the ends of the v”=0 and finishing in the v=1, 2, etc. states. The (1,0), (2,0), etc. lines diminish rapidly in intensity, however as shown in the foot of the figure above. In pa ...
... the atom being near the extremities of its vibrational motion. Hence there is some chance of the transition starting from the ends of the v”=0 and finishing in the v=1, 2, etc. states. The (1,0), (2,0), etc. lines diminish rapidly in intensity, however as shown in the foot of the figure above. In pa ...
Optics6 - Cbsephysicstutorials
... Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable to see each other even though they can converse easily. Ray optics is based on the assumption that light travels in a straight line. ...
... Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable to see each other even though they can converse easily. Ray optics is based on the assumption that light travels in a straight line. ...
Scanning-probe spectroscopy of semiconductor donor molecules LETTERS
... band profile is shown in Fig. 1b. Figure 1c shows an example of the energy landscape of the Si donor layer. Figure 2a shows a representative capacitance curve; the measurements consistently showed three broad peaks in the vicinity of 0.5–0.9 V, labelled A, B and C. Supplementary Information, Fig. S1 ...
... band profile is shown in Fig. 1b. Figure 1c shows an example of the energy landscape of the Si donor layer. Figure 2a shows a representative capacitance curve; the measurements consistently showed three broad peaks in the vicinity of 0.5–0.9 V, labelled A, B and C. Supplementary Information, Fig. S1 ...
Surface profile measurement of aspheric optics using
... In general, an optical system such as a camera or a telescope uses lenses or mirrors or a combination of both to obtain an image of the desired object. The image quality substantially depends on the lenses and mirrors used to build the optical system. It is well known that a single spherical surface ...
... In general, an optical system such as a camera or a telescope uses lenses or mirrors or a combination of both to obtain an image of the desired object. The image quality substantially depends on the lenses and mirrors used to build the optical system. It is well known that a single spherical surface ...
... Wireless optical communications underwater is enjoying a renewed interest from researchers due to the wide advances in laser sources and receivers, digital communications, and signal processing. Underwater free space optics (uFSO) fulfills several niche applications for wireless communications in oc ...
PDF
... categories: Eddington adiabatic transfer [1] and Einstein clock synchronization [2]. Eddington’s method requires that the two parties (say Alice and Bob) exchange a running clock, e.g., Alice sends her clock to Bob, and he compares it with his own. This method does not require time-of-arrival measur ...
... categories: Eddington adiabatic transfer [1] and Einstein clock synchronization [2]. Eddington’s method requires that the two parties (say Alice and Bob) exchange a running clock, e.g., Alice sends her clock to Bob, and he compares it with his own. This method does not require time-of-arrival measur ...
Optical Fibers in Communication
... control designers have over incident light. Laser diodes can be made to emit light at either 1300nm or 1550 nm, and also over a small spectral width (unlike LEDs), which reduces chromatic dispersion. Their emitting areas are extremely small and so the angle of incidence of light on a fiber can be ac ...
... control designers have over incident light. Laser diodes can be made to emit light at either 1300nm or 1550 nm, and also over a small spectral width (unlike LEDs), which reduces chromatic dispersion. Their emitting areas are extremely small and so the angle of incidence of light on a fiber can be ac ...
Suppression of Stimulated Brillouin Scattering
... high reflectivity and high sidemode suppression ratio at the desired wavelength. This tuning mechanism is used to select a particular cavity mode. By injecting current into the phase section, the position of the cavity modes may be precisely controlled. It is apparent that a low magnitude dither app ...
... high reflectivity and high sidemode suppression ratio at the desired wavelength. This tuning mechanism is used to select a particular cavity mode. By injecting current into the phase section, the position of the cavity modes may be precisely controlled. It is apparent that a low magnitude dither app ...
Tuning the polarization state of light via time retardation with...
... by illuminating the sample with a y-polarized plane wave from below under normal incidence. The near-field amplitude and phase information are obtained by mapping the light scattered from the dielectric silicon tip with a pseudoheterodyne interferometer24 simultaneously with the topography imaging. ...
... by illuminating the sample with a y-polarized plane wave from below under normal incidence. The near-field amplitude and phase information are obtained by mapping the light scattered from the dielectric silicon tip with a pseudoheterodyne interferometer24 simultaneously with the topography imaging. ...
PDF: 27 pages, 167 KB - Quantum aspects of the world
... Planck reasoned that the source of the problems with the Rayleigh-Jeans theory was its assumption that each oscillation mode could store the same average energy, Eavg = kB T, at a given temperature independently of its frequency n. Rayleigh and Jeans derived this average energy by assuming that a gi ...
... Planck reasoned that the source of the problems with the Rayleigh-Jeans theory was its assumption that each oscillation mode could store the same average energy, Eavg = kB T, at a given temperature independently of its frequency n. Rayleigh and Jeans derived this average energy by assuming that a gi ...