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US 12,671,223 B2Granted
Laser apparatus and method
AssigneeMcMaster University
InventorsChang-Qing Xu, Liam Flannigan, Joshua Kneller
Life of this patent
Estimating the term…
Abstract
A narrow linewidth mid infrared laser, including a pumping laser diode with a fast-axis compressor and a pumping wavelength λo; and an optical resonator arranged to receive the pumping wavelength λo, the optical resonator including a laser crystal with a lasing wavelength λp, a dichroic mirror, and a nonlinear crystal to generate an idler wavelength λi.
Claims24
A narrow linewidth mid infrared laser, comprising:
- a. a pumping laser diode with a fast-axis compressor and configured to generate a lasing light at a lasing wavelength λo;
- and
- b. an optical resonator arranged to receive the lasing light at the pumping lasing wavelength λo, the optical resonator including a laser crystal that is configured to receive the lasing light and to generate a pumping light at a pumping wavelength λp, a dichroic mirror, and a nonlinear crystal configured to receive the pumping light and to generate an idler light at an idler wavelength λi and to generate a signal light at a signaling wavelength λs, wherein the idler light travels in an opposite direction to the signal light and the pumping light;
- wherein the nonlinear crystal is configured with an orientation patterned semiconductor that has a period of Λ and a respective refractive index np, ns, ni at corresponding wavelengths, and the period Λ is determined based on a quasi-phase matched condition 1/Λ=np/λp−−ns/λs+ni/λi and an energy conservation condition of backward optical parametric oscillation 1/λp=1/λs+1/λi.
1 more element
A narrow linewidth mid infrared laser, comprising:
- a. a pumping laser diode with a fast-axis compressor and configured to generate a lasing light at a lasing wavelength λo;
- and
- b. an optical resonator arranged to receive the lasing light at the lasing wavelength λo, the optical resonator including a laser crystal that is configured to receive the lasing light and to generate a pumping light at a pumping wavelength λp, and a nonlinear crystal configured to receive the pumping light and to generate an idler light at an idler wavelength λi and to generate a signal light at a signaling wavelength λs, wherein the idler light travels in an opposite direction to the signal light and the pumping light;
- wherein the nonlinear crystal is configured with an orientation patterned semiconductor that has a period of Λ and a respective refractive index np, ns, ni at corresponding wavelengths, and the period Λ is determined based on a quasi-phase matched condition 1/Λ=np/λp−ns/λs+ni/λi and an energy conservation condition of backward optical parametric oscillation 1/λp=1/λs+1/λi;
- and
- c. an optical filter arranged to receive the idler light at the idler wavelength λi from an outlet facet of the nonlinear crystal.
3 more elements
A high power mid infrared laser, comprising:
- a. a pumping laser diode with a fast-axis compressor and configured to generate a lasing light at a lasing wavelength λo;
- and
- b. a first optical resonator arranged to receive the lasing light at the lasing wavelength λo, the first optical resonator including a laser crystal that is configured to receive the lasing light and to generate a pumping light at a lasing pumping wavelength λp, a dichroic mirror, and a nonlinear crystal configured to receive the pumping light and to generate an idler light at an idler at an idler wavelength λi and a signal light at a signal wavelength λs, wherein the idler light travels in an opposite direction to the signal light and the pumping light;
- wherein the nonlinear crystal is configured with an orientation patterned semiconductor that has a period of Λ and a respective refractive index np, ns, ni at corresponding wavelengths, and the period Λ is determined based on a quasi-phase matched condition 1/Λ=np/λp−ns/λs−ni/λi and an energy conservation condition of forward optical parametric oscillation 1/λp=1/λs+1/λi;
- and
- c. a second optical resonator arranged to confine the signal light at the signal wavelength λs, the second optical resonator including a second mirror, a narrow bandwidth optical filter, the dichroic mirror, and the nonlinear crystal.
3 more elements
Dependencies are inferred from the claim text.