Laser Phase Offset Lock: Difference between revisions
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Offset Lock to phase modulate a pair of External Cavity Diode Lasers (ECDLs) for | Offset Lock to phase modulate a pair of External Cavity Diode Lasers (ECDLs) separated by 6.8 GHz for manipulating between the hyperfine ground levels in Rb87. | ||
===Project Plans=== | ===Project Plans=== | ||
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1. Assemble two ECDLs. | 1. Assemble two ECDLs. | ||
2. Frequency stabilise one of the ECDLs to the Rb87 <sup>5</sup>S<sub>1/2</sub> | 2. Frequency stabilise one of the ECDLs to the Rb87 <sup>5</sup>S<sub>1/2</sub> → <sup>5</sup>P<sub>3/2</sub>. | ||
3. Create a beat signal between the two lasers via heterodyning. | |||
4. Phase modulate laser to obtain a 6.8 GHz beat signal and stabilise it at this fixed offset | |||
Latest revision as of 15:06, 18 September 2026
Offset Lock to phase modulate a pair of External Cavity Diode Lasers (ECDLs) separated by 6.8 GHz for manipulating between the hyperfine ground levels in Rb87.
Project Plans
1. Assemble two ECDLs.
2. Frequency stabilise one of the ECDLs to the Rb87 5S1/2 → 5P3/2.
3. Create a beat signal between the two lasers via heterodyning.
4. Phase modulate laser to obtain a 6.8 GHz beat signal and stabilise it at this fixed offset