Sequential-pulse single-frequency laser power amplification apparatus and sequence controllable multi-laser system

A sequential-pulse single-frequency laser power amplification apparatus applied for an atomic system, comprising a sequence control unit and a power amplification unit, wherein

• the sequence control unit is configured to modulate parameters of an incident source laser and control a sequence switch for the source laser, for generating a primary laser;
• and
• the power amplification unit is configured to power amplify the primary laser, to generate a secondary laser;
• wherein
• when the primary laser is incident into the power amplification unit, the secondary laser resonates with the atomic system;
• when the power amplification does not have the primary laser injected, the secondary laser is detuned from the atomic system;
• the sequence control unit comprises a ½ wave plate, a polarization beam splitter, a first acousto-optic modulator, a ¼ wave plate, and a total reflection mirror disposed in sequence;
• the ½ wave plate is configured to deflect a linear polarization direction of the source laser, for generating a first linearly polarized light;
• the polarization beam splitter is configured to transmit the first linearly polarized light to the first acousto-optic modulator;
• the first acousto-optic modulator is configured to shift frequencies of the first linearly polarized light, control timing sequence for the first linearly polarized light, and emit a first-order diffraction light beam to the ¼ wave plate;
• the ¼ wave plate is configured to turn the first-order diffraction light beam into a first circularly polarized light;
• the total reflection mirror is configured to receive and reflect the first circularly polarized light, so as to emit a second circularly polarized light, wherein the second circularly polarized light is configured to pass through the ¼ wave plate and the first acousto-optic modulator in succession along an initial path wherein the ¼ wave plate is further configured to turn the second circularly polarized light into a second linearly polarized light wherein a polarization direction of the second linearly polarized light is perpendicular to a polarization direction of the first linearly polarized light;
• and
• the polarization beam splitter is further configured to receive and reflect the second linearly polarized light, so as to output the primary laser to the power amplification unit.