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
Antennas and their coupling characteristics for wireless power transfer via magnetic coupling
Controlling generation of debug exceptions
Fire detector
Methods and apparatus for deactivating internal constraint curves when inflating an N-sided patch
Sample analyzing device
Multi-touch recognition resistive touch screen for recognizing multi-touch coordinates through capacitor charging time
Computer system for routing package deliveries
  Randomly Featured Patents
4H-3,1-Benzoxazine derivatives and their use for controlling undesired plant growth
Two piece drive shaft retention device for outboard motor
Process for making a garment having hanging legs
Dual mode vacuum cleaner
Recliner chair swing
Deterioration signal generation device for oxygen sensor
Method and apparatus for determining dielectric constant
Probing card
Image drum cartridge
Indicator device responsive to axial force