Resources Contact Us Home
Tunable laser with stabilized grating

Image Number 11 for United States Patent #7075963.

A line-narrowing module for a laser includes a prism beam expander and a grating preferably attached to a heat sink. A pressure-controlled enclosure filled with an inert gas seals the grating and/or other elements of the line-narrowing module. The pressure in the enclosure is adjusted for tuning the wavelength. Preferably, the pressure is controlled by controlling the flow of an inert gas through the enclosure. A pump may be used, or an overpressure flow may be used. Alternatively, a prism of the beam expander or an etalon may be rotatable for tuning the wavelength.

  Recently Added Patents
Liquid crystal display device
Nanoparticle entrapment of materials
System, apparatus, and method for fast startup of USB devices
Changing sound alerts during a messaging session
Vehicle lamp component
Photoacoustic joulemeter utilizing beam deflection technique
Tool box
  Randomly Featured Patents
Apparatus and method for automated voice analysis in ACD silent call monitoring
Method for connecting or disconnecting selected stations in a ring communication system, and ring communication system including selectively connectable stations
Deuterated 2-adamantylamino-5-nitropyridine, organic nonlinear optical material containing the compound, and production method of the compound
Bit line sense amplifier and semiconductor memory device having the same
Process for manufacture of positive electrode for lithium/metal sulfide secondary cell
Quasicrystalline structures and uses thereof
Digital camera
Method and apparatus for processing an image of a tissue sample microarray
Sealing device for a coke oven door
Method of removing dynamic nonlinear phase errors from MRI data