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
Methods and devices for coding and decoding images, computer program implementing them and information carrier enabling their implementation
Film, polarizing plate and display device, and method of manufacturing film
Methods circuits apparatuses and systems for facilitating access to online content
System and method for detecting deadlock in a multithread program
Titanium compounds and complexes as additives in lubricants
Process for producing dipeptides or dipeptide derivatives
RF power amplifier circuit with mismatch tolerance
  Randomly Featured Patents
Head lining mounting structure
Distributed Bragg reflectors with reduced optical absorption
Method and system for creation and reuse of concise business schemas using a canonical library
Pressure-responsive lockout valve and method of use
Sealed-cell waterfall display unit
Process for preparing 2-anilinoacridones
Construction nailing method and structures
Memory management system for checkpointed logic simulator with increased locality of data
Running gear, in particular for hoists and suspended loads, and method of braking a running gear