Signal augmentation method in spectroscopy device using vapor cell and spectroscopy device using the same

An absorption measurement spectroscopy device comprising:

• a vapor cell trapping atoms;
• a first photodiode which generates a first light for exciting an atom trapped in the vapor cell in a first hyperfine ground state to a first excited state and causes the first light to be incident on the vapor cell;
• a second photodiode which generates a second light for exciting an atom trapped in the vapor cell in a second hyperfine ground state to a second excited state and causes the second light to be incident on the vapor cell;
• a third photodiode which generates a third light for exciting the atom in the second excited state to a third excited state and causes the third light to be incident on the vapor cell;
• a photodetector which detects an intensity of the second light which has passed through the vapor cell;
• and
• a photo isolator which transmits only the second light among the lights which have passed through the vapor cell to the photodetector,
• wherein an area of the vapor cell on which the first light generated by the first photodiode is incident and an area of the vapor cell on which the second light generated by the second photodiode is incident are spatially separated.

An operation method of the spectroscopy device, the operation method comprising:

• causing a first light for exciting an atom trapped in a vapor cell in a first hyperfine ground state to a first excited state to be incident on the vapor cell;
• causing a second light for exciting an atom trapped in the vapor cell in a second hyperfine ground state to a second excited state to be incident on the vapor cell;
• causing a third light for exciting the atom in the second excited state to a third excited state to be incident on the vapor cell;
• and
• detecting fluorescence which is emitted while the atom in the third excited state returns to the ground state,
• wherein an area of the vapor cell on which the first light is incident and an area of the vapor cell on which the second light is incident are spatially different from each other.

An operation method of the spectroscopy device, the operation method comprising:

• causing a first light for exciting an atom trapped in a vapor cell in a first hyperfine ground state to a first excited state to be incident on the vapor cell;
• causing a second light for exciting an atom trapped in the vapor cell in a second hyperfine ground state to a second excited state to be incident on the vapor cell;
• causing a third light for exciting the atom in the second excited state to a third excited state to be incident on the vapor cell;
• and
• detecting an intensity of the second light which has passed through the vapor cell,
• wherein an area of the vapor cell on which the first light is incident and an area of the vapor cell on which the second light is incident are spatially different from each other.