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US 5,633,883 AGranted
Continuously tunable solid state ultraviolet coherent light source
AssigneeCedars-Sinai Medical Center
InventorsWeiqiang Shi, Warren S. Grundfest
Life of this patent
Estimating the term…
Abstract
A compact solid state source of coherent laser light in the range of about 298 nm through about 355 nm utilizes a Nd:YAG or Nd:YLF laser to pump a tunable Ti:Al.sub.2 O.sub.3 laser. The beam from the Nd:YAG/Nd:YLF laser is then combined in a nonlinear optical crystal with the tunable beam from the Ti:Al.sub.2 O.sub.3 laser to provide a continuously tunable laser beam in the range of about 298 nm through about 355 nm.
Claims9
An ultraviolet light source comprising:
- a first pump light source comprising a laser,
- a tunable laser driven by said first pump light source to provide a second light source,
- a non-linear optical frequency mixing element optically coupled to said first pump light source and said second light source, said non-linear optical frequency mixing element phase matching the light received from said first pump light source and said second light source to produce light having a wavelength in the ultraviolet region.
An ultraviolet light source comprising:
- a first pump light source comprising a laser,
- a tunable laser driven by said first pump light source to provide a second light source,
- a plurality of NLO crystals, wherein one of said NLO crystals is selected at any one time to be optically coupled to said first pump light source and said second light source to produce light having a wavelength in the ultraviolet region, and
- means for directing light from said first pump light source and light from said second light source along a common path to said selected NLO crystal.
1 more element
An ultraviolet light source comprising:
- a first pump light source,
- a tunable laser driven by said first pump light source to provide a second light source,
- means for directing light from said first pump light source and light from said second light source along a common path,
- a non-linear optical frequency mixing element mounted on a rotary stage and optically coupled to said first pump light source and said second light source,
- wherein the output frequency of said tunable laser is controlled by a tuning element rotatable about an axis the rotation of which is synchronized with rotation of said rotary stage.
2 more elements
An ultraviolet light source comprising:
- a first pump light source,
- a tunable laser driven by said first pump light source to provide a second light source,
- means for directing light from said first pump light source and light from said second light source along a common path,
- an LBO non-linear optical frequency mixing element mounted on a rotary stage and optically coupled to said first pump light source and said second light source and located along said common path,
- an output cavity resonator,
- wherein the .theta. optical axis of the LBO non-linear optical frequency mixing element is oriented at an angle of about 90.degree. with respect to said common path and the .phi. optical axis of the LBO non-linear optical frequency mixing element is oriented at an angle of from about 38.56.degree. to about 62.50.degree. with respect to said common path.
3 more elements
Dependencies are inferred from the claim text.