Controllabel dual-wavelength operation of modelocked lasers
AssigneeImra America, Inc.
InventorsMartin E. Fermann, Gregg Sucha, Donald J. Harter
Life of this patent
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Abstract
A laser system that enables dual-wavelength asynchronous modelocked operation with controllable repetition rates reduces gain competition and wavelength coupling with either inhomogeneously or homogeneously broadened gain media. Another purpose of the laser system is to minimize pulse interaction effects. The system includes a laser excitation device for generating output wavelengths from the gain medium with non-uniform gain profile. Further, the system includes devices for modelocking and coupling the wavelengths generated by the gain medium. The system includes at least one laser cavity for each of the generated wavelengths.
Claims20
A laser system, comprising:
- i. generation means having a single gain medium, for generating light outputs having at least a first wavelength and a second wavelength;
- ii. first modelocking means for modelocking said first wavelength;
- iii. second modelocking means for modelocking said second wavelength;
- iv. output coupling means for coupling said first wavelength and said second wavelength to respective outputs;
- v. laser excitation means for exciting said gain medium;
- and
- vi. at least one laser cavity for said first wavelength and said second wavelength.
A laser system comprising:
- i. a generation means having an inhomogeneously broadened, single gain medium, for generating light outputs at at least a first wavelength and a second wavelength wherein said gain medium has a relaxation time greater than 1 .mu.sec;
- ii. first active or passive modelocking means for modelocking said first wavelength;
- iii. second active or passive modelocking means for modelocking said second wavelength;
- iv. output coupling means for coupling said first wavelength and said second wavelength to respective outputs;
- v. laser excitation means for exciting said gain medium;
- vi. at least one laser cavity for said first wavelength and said second wavelength;
- and
- vii. wavelength selective elements, wherein said elements feed said first wavelength along a first path and said second wavelength along a second path different from said first path.
A laser system, comprising:
- i. a generation means having an inhomogeneously broadened, single gain medium, for generating light outputs at at least a first wavelength and a second wavelength, wherein said gain medium has a group velocity walk off between pulses approximately equal to or greater than one pulse width;
- ii. first modelocking means for modelocking said first wavelength;
- iii. second modelocking means for modelocking said second wavelength, wherein said first modelocking means is positioned at a location separated from said second modelocking means;
- iv. output coupling means for coupling said first wavelength and said second wavelength to respective outputs;
- v. laser excitation means for exciting said gain medium;
- vi. at least one laser cavity for each of said first wavelength and said second wavelength, wherein said gain medium is positioned in a location common to said laser cavities;
- and
- vii. wavelength selective elements, wherein said elements feed said first wavelength along a first path and said second wavelength along a second path different from said first path.
A laser system, comprising:
- i. a generation means in the form of a gain medium which generates soliton-like pulse outputs at at least a first wavelength and a second wavelength;
- ii. first modelocking means for modelocking said first wavelength;
- iii. second modelocking means for modelocking said second wavelength, wherein said first modelocking means is positioned at a location separated from said second modelocking means and said gain medium;
- iv. output coupling means for coupling said first wavelength and said second wavelength to respective outputs;
- v. laser excitation means for exciting said gain medium;
- vi. at least one laser cavity for each of said first wavelength and said second wavelength, wherein said gain medium is positioned in a location common to said laser cavities;
- and
- vii. wavelength selective elements, wherein said elements feed said first wavelength along a first path and said second wavelength along a second path different from said first path.
Dependencies are inferred from the claim text.