摘要:
The present invention relates to a solid-state laser which forms a high-energy and high-power laser beam with a high repetition rate and whose overall system can be optically aligned in a simple manner. The solid-state laser of the invention can be fabricated by means of reflecting the laser beam which is reflected by a phase conjugation mirror(PCM) using stimulated Brillouin scattering(SBS) in a direction that is incidented on the PCM again, concurrently with the arrangement of directions of emission and incidence of the laser beam by the aid of polarization beam splitter(PBS).
摘要:
The present invention relates to a passively Q-switched laser with a dual-cavity configuration to obtain a symmetrical laser pulse with a short and variable pulse width. The passively Q-switched laser comprises: a laser medium and a passively Q-switching medium; a cavity mirror capable of fully reflecting the respective wavelengths emitted from the laser medium and the passively Q-switching medium; a main cavity mirror composed of a dichroic mirror having non-reflective characteristics for the light emitted from the passively Q-switching medium and reflective characteristics for the light emitted from the laser medium with a reflectivity of 10% or more; and, an auxiliary cavity mirror composed of a dichroic mirror having non-reflective characteristics for the light emitted from the laser medium and reflective characteristics for the light emitted from the passively Q-switching medium with a reflectivity of 10% or more and capable of moving transversely against the laser beam.
摘要:
Disclosed are an apparatus and a method for controlling phases of beams to make relative phases of the beams “O” in a beam splitting amplification laser using a stimulated Brillouin scattering phase conjugate mirror. A procedure of making a phase difference between laser beams reflected from the phrase conjugate miror “O” comprises a first step of inputting laser beams 104′, . . . , 114′ and 124′ reflected from the phrase conjugate mirrors to a light detector 150 through light path converters 131 and 132; a second step of using one of the reflected laser beams as a reference laser beam 104′ and making the reference laser beam intefere with another reflected laser beam 114′; and a third step of detecting the interference result and finely driving piezoelectric elements 109 and 119 to control the positions of the reflectors 108, 118 and 128, to thereby make a phase difference between the laser beam 104′ and 104′ become “O”.
摘要:
A method for controlling phases of beams to make relative phases of the beams “0 ” in a beam splitting amplification laser using a stimulated Brillouin scattering phase conjugate mirror. A procedure of making a phase difference between laser beams reflected from the phase conjugate mirror “0” comprises a first step of inputting laser beams reflected from the phase conjugate mirrors to a light detector through light path converter a second step of using one of the reflected laser beams as a reference laser beam and making the reference laser beam interfere with another reflected laser beam; and a third step of detecting the interference result and finely driving piezoelectric element to control the positions of the reflectors, to thereby make a phase difference between the become “0”.
摘要:
The present invention relates to a highly repetitive laser employing a rotating wedge, and more specifically, a laser employing a rotating wedge which can provide a laser beam having a uniform spatial intensity profile with a high repetition rate. The highly repetitive laser of the invention is characterized by positioning a rotating wedge between a main resonator and a focusing lens to change the point in which a laser beam emitted from the main resonator is focused, in a laser which comprises a main resonator consisting of a laser medium, a passive Q-switching material and partially reflective mirrors and an auxiliary resonator consisting of a focusing lens and a cell. The present invention can improve the efficiency of high-power conventional lasers; and, therefore, it can be applied in advanced experiments such as second harmonic generation and amorphous silicon annealing and in the precision industry which requires a highly repetitive laser, since it can provide a laser beam having a uniform pattern and high directional properties.