6 results about "Phase conjugate mirror" patented technology

The application discloses an SBS phase conjugation mirror capable of displaying a sound wave field in real time, and belongs to the technical field of nonlinear optics.The application comprises the following steps: pump light passes through a half-wave plate and a polarization beam splitter, passes through an optical isolator, changes a polarization state through a quarter-wave plate, is focused through a focusing lens, and then enters an SBS medium pool, stimulated Brillouin scattering occurs, a periodic density modulation is formed in the medium, and an equivalent acousto-optic grating structure is generated.Through introducing an independent probe light beam, the probe light enters the SBS medium pool at an incident angle satisfying the Bragg diffraction condition, and the probe light will be diffracted on the acousto-optic grating formed by the sound wave field.The intensity of the diffracted light changes with the intensity of the sound wave field, so that the real-time measurement of the sound wave field waveform and the life parameter in the SBS process can be realized by detecting the change of the diffracted light intensity with time.

This invention relates to a device for real-time observation of laser-induced thermal convection within a SBS-PCM based on schlieren imaging, belonging to the field of optical laser measurement technology. It addresses the problem of existing technologies being unable to perform non-invasive, real-time, and quantitative observation of transient thermal convection fields within SBS-PCMs. The invention comprises: a pump source, an energy adjustment system, an optical isolation system, a beam separation system, a reflection focusing system, a probe source, a beam expander and collimator system, an SBS phase conjugate mirror, and a schlieren imaging system. The beneficial effects of this invention are: by designing the probe light and pump light to propagate collinearly within the dielectric cell, the schlieren imaging system and the pump source are synchronized for triggering, enabling real-time reception of probe light carrying refractive index gradient information. Combined with multi-dimensional visualization methods, the data is processed in real time, comprehensively revealing the intensity, morphology, and directional characteristics of the thermal convection field.

Multiphase energy storage system comprising: - at least two energy storage cells (Z_k), each assigned an individually controllable phase angle (φ_k) relative to a common interconnect reference, - a control unit with an N-phase phase control loop (PLL) configured to charge the cells with phase shift (interleave operation) and discharge them in phase coherence within a defined focus window (Δt_focus), - the control unit temporally concentrates the stored co-energy of several cells onto a short output pulse of high instantaneous power (time focusing), - a side buffer bus (surge manifold, C_pool) with an active clamping path (AUX-FET, L_rec) that absorbs overshoot energy (W_overshoot) from switching and load transients and feeds it back into the cells or the DC link in a targeted manner, - a mirror pulse unit configured to generate a phase-conjugated current ramp pulse,which generates a targeted counter-oscillation to the transient and limits ringing to less than 10% of the peak value. The mirror pulse unit simultaneously feeds recoverable energy (W_rec) into the surge manifold, thereby combining transient attenuation and energy recovery in a single switching operation.

The application belongs to the technical field of laser, and proposes a 1064nm all-solid-state laser based on beam homogenization and circular polarization amplification, which comprises an oscillator, a pre-amplifier, a first main amplifier, a second main amplifier, a third main amplifier and a fourth main amplifier arranged along an optical path in sequence, the beam homogenization technology is introduced to control and optimize the laser beam after the second main amplifier, the circular polarization amplification technology is used to optimize the energy amplification process of the third main amplifier and the fourth main amplifier, and the high-stability compact high-energy 1064nm laser output is completed without using a spatial filter and a stimulated Brillouin scattering phase conjugation mirror.

The invention belongs to the technical field of lasers. The 1064nm all-solid-state laser based on light beam homogenization and circular polarization amplification comprises an oscillator, a pre-amplifier, a first-stage main amplifier, a second-stage main amplifier, a third-stage main amplifier and a fourth-stage main amplifier which are sequentially arranged along a light path. The circular polarization amplification technology is utilized to optimize the energy amplification process of the three-stage main amplifier and the four-stage main amplifier, and high-stability compact large-energy 1064nm laser output is completed under the condition that a spatial filter and a stimulated Brillouin scattering phase conjugate mirror are not adopted.

An optical system and method are disclosed for generating a phase-conjugated output beam. The system includes at least one phase conjugated mirror (PCM) configured to receive input signals and emit output signals with conjugated phase patterns. An optical arrangement directs an input beam, splits it into two or more beam portions, and transmits the portions to the PCM. The PCM produces corresponding phase-conjugated output signals, which are recombined to form a common output beam exhibiting phase conjugation of the original input.