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US 5,687,186 AGranted
Eyesafe laser transmitter with single resonator cavity for both pump laser and optical parametric oscillator
AssigneeHughes Electronics Corporation
InventorRobert D. Stultz
Life of this patent
Estimating the term…
Abstract
An eyesafe laser (10) transmitter having a the optical parametric oscillator (28). A Nd:YAG rod (22) provides gain for light at a first wavelength. The light is Q-switched (24) to increase the intensity. The optical parametric oscillator (28) then transforms the light at the first wavelength to light at a second wavelength, where light at the second wavelength will not harm the eyes.
Claims18
A laser comprising:
- a resonator cavity having a reflective surface on at least one end for at least partially reflecting light of a first wavelength within the resonator cavity and for partially reflecting light of a second wavelength within the resonator cavity;
- a pump laser disposed within the resonator cavity for supplying light at a pumping frequency to the laser cavity;
- and
- an optical parametric oscillator disposed within the resonator cavity for converting the light at the pumping frequency to light at an output frequency,
- wherein the optical parametric oscillator and the pump laser both are housed within the resonator cavity, and the resonator, the pump laser, and the optical parametric oscillator are optically aligned.
2 more elements
A laser comprising:
- a resonator cavity defining a common optical path;
- a first mirror disposed at one end of the resonator cavity along the optical path and reflecting light at a pumping and an output frequency towards the interior of the resonator cavity;
- a second mirror disposed at an opposite end of the resonator cavity from the first mirror along the optical path and reflecting light of at the pumping frequency toward the interior of the resonator and partially reflecting light at the output frequency toward the interior of the resonator cavity;
- a pump laser disposed within the within the resonator cavity along the optical path for supplying light at the pumping frequency;
- a Q-switch disposed along the optical path for increasing the intensity of light at the pumping frequency;
- a filter disposed along the optical path for polarizing light into a planar alignment;
- an optical parametric oscillator disposed within the resonator cavity along the optical path for converting the polarized light at the pumping frequency to light at the output frequency,
- wherein the optical parametric oscillator and the pump both are housed within the resonator cavity.
5 more elements
A laser comprising:
- a resonator cavity defining a common optical path;
- a first mirror disposed at one end of the resonator cavity along the optical path and reflecting light at a pumping frequency toward the interior of the resonator cavity and partially reflecting light at an output frequency toward the interior of the resonator cavity;
- a corner cube disposed at an opposite end of the resonator cavity from the first mirror along the optical path for redirecting light in the directing of the first mirror;
- a pump laser disposed within the resonator cavity along the optical path for supplying light at the pumping frequency;
- a Q-switch disposed along the optical path for increasing the intensity of light at the pumping frequency;
- a filter disposed along the optical path for polarizing light into a planar alignment;
- an optical parametric oscillator disposed within the resonator cavity along the optical path for converting light at the pumping frequency to light at the output frequency,
- wherein the optical parametric oscillator and the pump laser both are housed within the resonator cavity.
5 more elements
Dependencies are inferred from the claim text.