One-dimensional optical lattice production device and method with calibration function

A production method for a one-dimensional optical lattice production device with calibration function, comprising following steps:

• loading step, configured for loading a magneto-optical trap in a scientific chamber with a vacuum degree of 2.1×10−9 Pa, obtaining an ultra-cold sodium atomic sample in the magneto-optical trap, cooling the ultra-cold sodium atomic sample by compressing the magneto-optical trap and optical molasses, and loading the atomic sample into the optical dipole trap to form sodium BEC in the scientific chamber by evaporative cooling;
• propagating step, configured for passing a laser beam through an optical isolator, through a first half-wave plate to a first polarizing beam splitter, entering a transmitted beam of the laser beam into a center of a first garbage pool, passing a reflected beam of the laser beam through a center of a first lens group and into an acousto-optic modulator after being reflected by a first reflector, guiding zero-order light of the acousto-optic modulator into a center of a third garbage pool through a D-shaped reflector, and passing +1 order light of the acousto-optic modulator into an optical fiber coupler through a second lens group, a third reflector, and a fourth reflector;
• transmitting the laser light through optical fiber, out of a collimator, and into a second polarizing beam splitter;
• guiding a reflected beam therefrom into a second garbage pool, passing a transmitted beam from the second polarizing beam splitter through a center of the scientific chamber, through a third polarizing beam splitter, and guiding a transmitted beam from the third polarizing beam splitter into a fourth garbage pool and passing the reflected beam therefrom through a third half-wave plate and into a fourth reflector;
• adjusting step, configured for adjusting the fourth reflector such that reflected light and incident light roughly coincide, and adjusting the fourth reflector and the collimator upon observing light spots on windows at both sides of the scientific chamber such that the light spots at both sides roughly coincide;
• calibrating step, configured for installing a light path coincidence calibration unit, adjusting a fourth half-wave plate and a fifth half-wave plate such that incident light and reflected light enter an optical power probe after being reflected by a fourth polarizing beam splitter, continuously adjusting a fourth reflector upon observing intensity changes of optical power of the optical power probe, removing the light path coincidence calibration unit when a light intensity reach a maximum, thereby completing calibration;
• and
• producing step, configured for producing the one-dimensional optical lattice.