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
Image-processing method and program, and image-processing apparatus
Portable, single member housing cord protector
Method, system and computer program product for managing funds in custodial deposit accounts
System and method for data reconfiguration in an optical communication network
Etch resistant clearcoat
Coated article and method for making the same
Control device of hybrid vehicle
  Randomly Featured Patents
Stoma centering apparatus
One step catheter advancement automatic needle retraction system
Solid state electric double layer capacitor
Generating test benches for pre-silicon validation of retimed complex IC designs against a reference design
Color cathode-ray tube
Contoured surface eddy current inspection system
Dropper machine
Apparatus for marking the surface of articles
Non-yellowing tape article
Enhanced television recorder and player