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
Non-volatile memory and method having efficient on-chip block-copying with controlled error rate
System and method for enhanced transaction payment
Managing and collaborating with digital content
Semiconductor device including a clock generating circuit for generating an internal signal having a coarse delay line, a fine delay line and a selector circuit
Food-grade flour from dry fractionated corn germ and collet composition and method for producing same
Semiconductor device and method of manufacturing the same
  Randomly Featured Patents
Process for the dehydrogenation of hydrocarbons
Cable trough system and method
Aromatic diamine derivative and organic electroluminescent device using the same
Electrostatic discharge protection device including precharge reduction
Motor vehicle drive device
System for transferring data between an interleaved main memory and an I/O device at high speed
Vice jaw assembly with floating spacer and gripping blocks for use with a tool holder
Portable stove assembly
Method for manufacturing semiconductor device