A medical laser apparatus according to an embodiment of the present invention comprises: a laser oscillation unit for oscillating a laser; a beam width adjustment unit for adjusting the beam width of the laser oscillated from the laser oscillation unit; and a concentration unit for concentrating the laser of which the beam width has expanded by means of the beam width adjustment unit.

A laser system includes a first cavity to output a laser light along a first path, a first mirror to receive the laser light from the first cavity, and redirect the laser light along a second path that is different than the first path, a beam splitter removably located at a first position on the second path, a beam combiner removably located at a second position on the second path, and an alignment device having first and second alignment features. The first and second alignment features occupy the first position and the second position, respectively, on the second path, when the beam splitter and the beam combiner are removed from the first position and the second position.

An exemplary treatment system can be provided which can include a laser system configured to emit at least one laser beam, and an optical system configured to focus the laser beam(s) to a focal region at a selected distance from a surface of a tissue. The focal region can be configured to illuminate at least a portion of a target. The optical system can cause an irradiation energy transferred to the focal region of the laser beam(s) to (i) generate a plasma in a first region of the tissue adjacent to the target, and (ii) avoid a generation of a plasma in a second region of the tissue. The optical system has a numerical aperture that is in the range of about 0.5 to about 0.9. An exemplary method can also be provided to control such treatment system.

An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed by the XY and Z scanners at a location tangential to a parallel of latitude of the surface of the lenticule. The XY and Z scanners then move the scan line in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, and a prism is used to change the orientation of the scan line of the high frequency scanner between successive sweeps. In each sweep, the sweeping speed along the meridian is variable, being the slowest at the edge of the lenticule and the fastest near the apex.

The presently disclosed subject matter provides techniques for inducing collagen cross-linking in human tissue, such as cartilage or cornea, without using a photosensitizer (e.g., riboflavin), by inducing ionization of the water contained in the tissue to produce free radicals that induce chemical cross-linking in the human tissue. In an embodiment, a femtosecond laser operates at sufficiently low laser pulse energy to avoid optical breakdown of tissue. In an embodiment, the femtosecond laser operates in the infrared frequency range.

A laser irradiating device preferably includes: a reflector having a receiving space formed therein; a flash lamp inserted and mounted in the reflector to generate light; a laser rod for resonating light incident from the flash lamp to emit a laser; a capacitor for storing, for a predetermined time interval, voltage to be supplied to the flash lamp; a digital variable resistor unit for outputting different voltages according to configured resistance values; a voltage increasing unit for increasing voltage input from the digital variable resistor unit and supplying the increased voltage to the capacitor; a control unit which stores resistance values corresponding to laser irradiating levels and configures a resistance value corresponding to the configured laser irradiating level; and a trigger circuit unit turned on according to a control of the user to supply a charge voltage of the capacitor to the flash lamp.

An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.

An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.

A cooling element includes a frame including one or more datums. The cooling element also includes a first window including a first proximal surface and a first distal surface. The first window is sealed to the frame. The cooling element further includes a second window sealed to the frame. The second window includes a second proximal surface and a second distal surface. The second window is configured to contact a target tissue or a tissue adjacent to the target tissue via the second distal surface. The cooing element also includes a coolant chamber located between the first distal surface of the first window and the second proximal surface of the second window and configured to receive a coolant. The first window, the second window and the coolant chamber are configured to receive and electromagnetic radiation (EMR), and transmit a portion of the received EMR to the target tissue.

A medical skin wrinkle reduction device using an RRSS laser irradiation method is proposed to reduce skin wrinkles and minimize tissue damage. The device includes: a main body having a mounting groove provided in an upper portion thereof, a tablet computer being attached to and detached from the mounting groove, and comprising signal transmission and reception parts exchanging signals with the tablet computer, and a microcomputer controlling an output of a laser beam; a handpiece comprising: a laser oscillation part generating the laser beam; an optical part emitting the laser beam as parallel light; a laser scanner controlling an irradiation position of the laser beam transmitted from the optical part; a laser pattern part having movement coordinate values set therein such that moving direction of the laser beam has a regular pattern; a tablet computer having functions of inputting data in a touch screen method and displaying a screen.