Abstract: A laser system for medical treatment is disclosed which comprises a pump, wherein the laser system is adapted to be operated in pulsed operation so that at least one laser pulse of a temporally limited pulse duration (Tp) is generated. The generated laser pulse irradiates some part of the human or animal body so that a two-dimensional laser spot S is located on the top layer of the irradiated part of the human or animal body. The pump power of the pump of the laser system is modulated in such a way that the cumulative energy ES(Tp/2) which is delivered by said laser pulse to said laser spot S during the first half of the pulse duration is less than 45% of the energy ES(Tp) which is delivered by said laser pulse to said laser spot S during the entire pulse duration Tp.

Abstract: A method for treating a fungal infection in an infected nail is disclosed. An embodiment includes placing an optical delivery system designed to deliver a laser beam with light having strongly water-absorbed wavelengths to the infected nail. The diseased nail is irradiated with the laser beam, and the fluence and a duration of the laser irradiation received by the nail are adjusted such that by laser energy absorption in a surface portion of the nail a superficial heating of the nail and heat diffusion from said heated surface portion into the infected nail bed are achieved. The bottom of the nail plate in this embodiment is heated to a treatment temperature needed to inactivate the infecting organism.

Abstract: An articulated arm for applying a laser beam to a treatment zone has an arm section and a horizontal pivot joint. A spring arrangement acts on the pivot joint and has a cam disk and a pressure member following the cam disk contour as the arm section pivots. The arm section has, relative to a vertical direction, positive and negative pivot angle ranges. In the positive range the spring arrangement relieves the pivot joint from weight forces. When a resting angle in the negative range is reached the articulated arm rests in a support device. A total moment resulting from a weight force moment of the articulated arm and a restoring moment of the spring arrangement acts on the articulated arm about the pivot joint; cam disk contour and spring pretension are matched such that for the resting angle the total moment is oriented toward the support device.

Abstract: In a method for operating a laser system in a Q-switched mode, the laser system provided with a laser resonator with a laser medium and an electro-optical modulator, wherein the electro-optical modulator has an EOM crystal, wherein the EOM crystal has a characteristic ringing time (t0) when subjected to acoustic ringing, the EOM crystal is driven by modulator voltage pulses (pm) having a modulator voltage pulse duration (tml). A train of at least two subsequent laser pulses (pl) is generated. The modulator voltage pulse duration (tml) is selected to be at least approximately equal to the characteristic ringing time (t0) of the EOM crystal multiplied by an integer factor.

Abstract: In a method for operating a laser system in a Q-switched mode, the laser system provided with a laser resonator with a laser medium and an electro-optical modulator, wherein the electro-optical modulator has an EOM crystal, wherein the EOM crystal has a characteristic ringing time (t0) when subjected to acoustic ringing, the EOM crystal is driven by modulator voltage pulses (pm) having a modulator voltage pulse duration (tml). A train of at least two subsequent laser pulses (pl) is generated. The modulator voltage pulse duration (tml)is selected to be at least approximately equal to the characteristic ringing time (t0) of the EOM crystal multiplied by an integer factor.

Abstract: For lightening or eradicating pigments in human skin, a first conditioning laser optical energy having first optical parameters selected to obtain an ablative effect on the epidermal layer of human skin is provided. A target area of the human skin is conditioned by directing the first conditioning laser optical energy onto the target area and forming in an epidermal layer of the target area discrete pressure and gas release ducts across the target area. A second treatment laser optical energy is provided that has second optical parameters selected to obtain a lightening or eradicating effect on the pigments located within the human skin and to substantially avoid damaging the epidermal layer of the human skin. The second treatment laser optical energy is directed onto the target area subsequent to conditioning, and the pigments within the human skin are lightenmed or eradicated by the second treatment laser optical energy.

Abstract: A laser system has a laser source for generating a laser beam, a control unit, and a hand piece for manually guiding the laser beam onto a target area. A wavelength (?) of the laser beam is in a range from above 1.9 ?m to 11.0 ?m inclusive. The laser system is adapted for a thermal, non ablative treatment of mucosa tissue by the laser beam such, that the laser source generates the laser beam in single pulses with a pulse duration (tp) in a range from 1.0 ?s, inclusive, to 1.0 sec, inclusive, and that a fluence of each of the single pulses on the target area of the mucosa tissue is in a range from 0.2 J/cm2, inclusive, to 2.5 J/cm2, inclusive, and preferably in a range from 1.40 J/cm2, inclusive, to 1.95 J/cm2, inclusive.

Abstract: The invention relates to a laser system for the treatment of body tissue (1) on an inner circumferential tissue surface (2). The laser system comprises a laser source (1) for the generation of a laser beam (3) and a handpiece (4) with a treatment head (5). The treatment head (5) extends along a longitudinal axis (6) and is adapted in an manner, that the longitudinal axis (6) of the treatment head (5) during operation is at least approximately parallel to the inner circumferential tissue surface (2). During operation the laser beam (3) enters the treatment head (5) in the direction of the longitudinal axis (6). A deflection mirror (7) is disposed in the treatment head (5) and guides the laser beam (3) radially outwards out of the treatment head (5) onto the inner circumferential tissue surface (2). Movable deflection means (8) for the laser beam (3) are provided to scan the inner circumferential tissue surface (2) within a treatment area (9) at least in a circumferential direction.

Abstract: A laser system for hard body tissue ablation has a pumped laser, wherein the laser system is operated in pulsed operation with several individual pulses of a temporally limited pulse length and wherein the individual pulses follow one another with temporal pulse spacing. The pumped laser has an inversion population remaining time, the inversion population remaining time being the time within which, in the absence of pumping, the remaining inversion population of the laser energy status is reduced by 90%. The pulse spacing is in the range from 50 ?s, inclusive, to the inversion population remaining time of ?50 ?s. The pulse length is selected to be in a pulse length range of ?10 ?s to ?120 ?s.

Abstract: A laser system has a laser source for generating a laser beam, a control unit, and a hand piece for manually guiding the laser beam onto a target area. A wavelength (?) of the laser beam is in a range from above 1.9 ?m to 11.0 ?m inclusive. The laser system is adapted for a thermal, non ablative treatment of mucosa tissue by the laser beam such, that the laser source generates the laser beam in single pulses with a pulse duration (tp) in a range from 1.0 ?s, inclusive, to 1.0 sec, inclusive, and that a fluence of each of the single pulses on the target area of the mucosa tissue is in a range from 0.2 J/cm2, inclusive, to 2.5 J/cm2, inclusive, and preferably in a range from 1.40 J/cm2, inclusive, to 1.95 J/cm2, inclusive.

Abstract: In a method for operating a laser system for bleaching teeth, a water-containing bleaching agent applied onto teeth is heated by a laser beam, wherein the laser beam has a wavelength in a range of 2.6 ?m, inclusive, to 3.1 ?m, inclusive, or in a range of 9.0 ?m, inclusive, to 11.0 ?m, inclusive. The laser system is operated in pulse mode with individual pulses of the laser beam, wherein the individual pulses each have a fluence that is below a vaporization threshold fluence of the bleaching agent.

Abstract: A laser system has a laser source generating a laser beam, wherein the laser source is adapted for medical removal of body tissue by the laser beam within a predetermined treatment contour. A guide frame in the shape of the treatment contour is provided. A scanner is provided for completely scanning a base surface of the guide frame with the laser beam, wherein the scanner is arranged between the laser source and the guide frame in a path of the laser beam.

Abstract: The invention relates to laser system with a laser source and an articulated arm. The articulated arm has an optical arrangement for guiding a laser beam from the laser source along an optical path in the articulated arm to a target location. Within the optical path at least one crossing area (focus or focal point) of the laser beam is provided. The optical arrangement has at least one optical cell with an input window and an output window for passing the laser beam therethrough, wherein the crossing area is positioned within the optical cell. The optical cell has a gas fill with an energy threshold for ionization that is increased in comparison to that of ambient air.

Abstract: An articulated arm for applying a laser beam to a treatment zone has an arm section and a horizontal pivot joint. A spring arrangement acts on the pivot joint and has a cam disk and a pressure member following the cam disk contour as the arm section pivots. The arm section has, relative to a vertical direction, positive and negative pivot angle ranges. In the positive range the spring arrangement relieves the pivot joint from weight forces. When a resting angle in the negative range is reached the articulated arm rests in a support device. A total moment resulting from a weight force moment of the articulated arm and a restoring moment of the spring arrangement acts on the articulated arm about the pivot joint; cam disk contour and spring pretension are matched such that for the resting angle the total moment is oriented toward the support device.

Abstract: A laser system for medical and cosmetic applications has an optical delivery system for guiding a laser beam to a target surface, wherein the optical delivery system has an external optical element facing toward the target surface. A mechanical filter in the form of a protective screen for shielding the external optical element from particles ejected away from the target surface by the laser beam is arranged at an exit side of the external optical element. The protective screen has structural elements that delimit screen openings. The laser system has spacers that maintain a spacing of the protective screen relative to the target surface.

Abstract: In a method for operating a laser system for bleaching teeth, a water-containing bleaching agent applied onto teeth is heated by a laser beam, wherein the laser beam has a wavelength in a range of 2.6 ?m, inclusive, to 3.1 ?m, inclusive, or in a range of 9.0 ?m, inclusive, to 11.0 ?m, inclusive. The laser system is operated in pulse mode with individual pulses of the laser beam, wherein the individual pulses each have a fluence that is below a vaporization threshold fluence of the bleaching agent.

Abstract: A laser system has a laser source generating a laser beam, wherein the laser source is adapted for medical removal of body tissue by the laser beam within a predetermined treatment contour. A guide frame in the shape of the treatment contour is provided. A scanner is provided for completely scanning a base surface of the guide frame with the laser beam, wherein the scanner is arranged between the laser source and the guide frame in a path of the laser beam.

Abstract: A laser system for hard body tissue ablation has a pumped laser, wherein the laser system is operated in pulsed operation with several individual pulses of a temporally limited pulse length and wherein the individual pulses follow one another with temporal pulse spacing. The pumped laser has an inversion population remaining time, the inversion population remaining time being the time within which, in the absence of pumping, the remaining inversion population of the laser energy status is reduced by 90%. The pulse spacing is in the range of ?50 ?s and ? to the inversion population remaining time.

Abstract: The invention relates to laser system with a laser source and an articulated arm. The articulated arm has an optical arrangement for guiding a laser beam from the laser source along an optical path in the articulated arm to a target location. Within the optical path at least one crossing area (focus or focal point) of the laser beam is provided. The optical arrangement has at least one optical cell with an input window and an output window for passing the laser beam therethrough, wherein the crossing area is positioned within the optical cell. The optical cell has a gas fill with an energy threshold for ionization that is increased in comparison to that of ambient air.

Abstract: A laser treatment method and apparatus is provided which facilitates the grafting of hairs on the skin of a living human. The methodology involves a carefully designed treatment protocol utilizing a modified optical apparatus. The apparatus is a modified erbium-based laser system, designed for optimal therapeutic selectivity.