Laser systems for spectroscopy
AssigneeVector Atomic, Inc.
InventorsJonathan David Roslund, Martin Machai Boyd, Arman Cingoz
Life of this patent
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Abstract
Embodiments herein describe spectroscopy systems that provide frequency, amplitude, and power-stabilized light to a vapor cell. An optical signal can be split into two optical paths where a first optical path includes an AOM to perform frequency and amplitude modulation to generate a pump optical signal and a second optical path that includes a variable optical attenuator (VOA) for generating a probe optical signal. These optical signals can then be provided into a vapor cell (also referred to as a gas cell) to perform spectroscopy.
Claims19
A spectroscopy system, comprising:
- an optical source configured to generate a first optical signal;
- a splitter configured to split the first optical signal into a second optical signal and a third optical signal;
- an acousto-optic modulator (AOM) configured to modulate the second optical signal to output a pump optical signal;
- a variable optical attenuator (VOA) configured to adjust the power of one of the second optical signal or the third optical signal, wherein the third optical signal is used to generate a probe optical signal;
- a vapor cell configured to receive the pump optical signal and the probe optical signal;
- and
- an optical isolator disposed between the splitter and the AOM configured to prevent back reflections from the AOM from reaching the splitter.
A method, comprising:
- receiving a first optical signal;
- splitting the first optical signal into a second optical signal and a third optical signal;
- generating, using an AOM, a pump optical signal by performing both frequency and amplitude modulation on the second optical signal;
- transmitting the second optical signal through an optical isolator before reaching the AOM, wherein the optical isolator prevents back reflections from the AOM from passing therethrough;
- generating a probe optical signal using the third optical signal, wherein a VOA adjusts the power of one of the second optical signal or the third optical signal;
- and
- transmitting the pump and probe optical signals into a vapor cell to perform spectroscopy.
A modulation transfer spectroscopy (MTS) system, comprising:
- a first optical source configured to generate a first optical signal;
- a second optical source configured to generate a second optical signal;
- a first power control signal path configured to adjust the power of the second optical signal to generate a probe optical signal;
- an AC control signal path configured to frequency modulate the first optical signal and a second power control signal path to control the power of the first optical signal to output a pump optical signal;
- and
- a vapor cell configured to receive the pump optical signal and the probe optical signal, wherein the spectroscopy system does not include an AOM.
Dependencies are inferred from the claim text.