摘要:
Laser devices are presented in which a graphene saturable absorber and an optical amplifier are disposed in a resonant optical cavity with an optical or electrical pump providing energy to the optical amplifier.
摘要:
Laser devices are presented in which a graphene saturable absorber and an optical amplifier are disposed in a resonant optical cavity with an optical or electrical pump providing energy to the optical amplifier.
摘要:
Laser devices are presented in which a graphene saturable absorber and an optical amplifier are disposed in a resonant optical cavity with an optical or electrical pump providing energy to the optical amplifier.
摘要:
An absorptive neutral density optical filter comprising one or more graphene layers disposed on an optical substrate. The optical substrate can be a solid material (e.g. glasses or crystals such as silicon carbide, sapphire, germanium, or potassium bromide), or a polymer, or even a wire mesh. The graphene can be grown on the optical substrate or can be growth on a growth substrate and then transferred to the optical substrate.
摘要:
A method and system for modifying the detected phase of a signal by driving a photodetector into saturation. This system and method differs from current manual and electrical microwave phase modification by using saturation means for modifying the phase. The system and method may use a plurality of the signal generators for saturating the photodetector.
摘要:
A method for fabricating an absorptive neutral density optical filter comprising one or more graphene layers disposed on an optical substrate. The optical substrate can be a solid material (e.g. glasses or crystals such as silicon carbide, sapphire, germanium, or potassium bromide), or a polymer, or even a wire mesh. The graphene can be grown on the optical substrate or can be growth on a growth substrate and then transferred to the optical substrate.
摘要:
Laser devices are presented in which a graphene saturable absorber and an optical amplifier are disposed in a resonant optical cavity with an optical or electrical pump providing energy to the optical amplifier.
摘要:
The present invention relates to a fishing hook with a shank portion and at least one hook portion. The hook portion extends from a lower end of the shank portion, which is provided with a hook attachment element. The hook attachment element is adapted to be threaded onto a hook support element attached to fishing tackle. The hook attachment element facilitates free sliding of the fishing hook along the hook support element and the hook attachment element accommodates the hook support element in a substantially parallel relationship to the shank portion. The hook attachment element is a channel formed along the shank portion. This channel is formed within a tube extending along the shank portion, the tube being adapted to accommodate the hook support element within the channel. The tube can extend along the entire length of the shank portion, or at least ¼ of the length of the shank portion. The hook attachment element can also be a number of rings provided to accommodate the hook support element.
摘要:
This invention discloses a hybrid photonic analog-to-digital converter using superconducting electronics to achieve a high-speeds. This scheme differs from most current designs by combining two systems, photonic and superconducting, to utilize each system for optimal performance. The photonic system performs the optical sampling of the signal with very low aperture and jitter errors. This optically sampled data is then converted to an electronic signal via an optoelectronic switch and quantized in the superconducting system. The high-speed (>100 GHz) superconducting electronic system transforms the quantized signal into a binary output. This invention allows for analog-to-digital conversion at much higher speeds than available with current electronic analog-to-digital converters.
摘要:
Laser devices are presented in which a graphene saturable absorber and an optical amplifier are disposed in a resonant optical cavity with an optical or electrical pump providing energy to the optical amplifier.