Abstract: Disclosed are a laser adapter, a multiphoton microscope main unit, an optical system. The laser adapter includes: a shell, and a beam transformation device and a beam stabilization device, which are arranged in the shell. The shell is provided with a laser input port and a laser output port. The beam transformation device is configured to transform a laser beam that enters the shell. The beam stabilization device is disposed downstream of the beam transformation device in a laser transmission direction, and is configured to adjust the laser transmission direction, so as to correct a deviation between an actual position and an ideal position of the laser beam at the laser output port. When lasers with different parameters are input or a laser deflects during transmission, there is no need to readjust an optical path or replace an optical device on the optical path.

Abstract: Disclosed are an imaging device based on multi-photon depth imaging and an imaging probe thereof, and a miniaturized imaging probe is implemented by using a separated structure. During imaging, the imaging probe may be fixedly connected to an imaging object, and an optical signal inside the imaging object may be collected by exciting a multi-photon effect inside the imaging object by excitation light to detect an internal status in the imaging object.

Abstract: Disclosed are an imaging device based on multi-photon depth imaging and an imaging probe thereof, and a miniaturized imaging probe is implemented by using a separated structure. During imaging, the imaging probe may be fixedly connected to the imaging object, and an optical signal inside the imaging object may be collected by exciting a multi-photon effect inside the imaging object through excitation light to detect an internal condition in the imaging object.

Abstract: The present invention provides a femtosecond pulse laser modulator and a miniature two-photon microscopic imaging device. The femtosecond pulse laser modulator includes a negative dispersion light path and a positive dispersion light path, wherein the negative dispersion light path includes a laser input fiber, which is configured to transmit laser compensated for through prechirp; the positive dispersion light path is located between a femtosecond pulse laser and the negative dispersion light path, and is configured to compensate for, through prechirp, negative dispersion of the laser produced in the laser input fiber. The femtosecond laser modulator provided in the present invention provides distortion-free transmission for the femtosecond pulse laser with a center wavelength in 920 nm, and effectively excites commonly used biological indicators.