Methods, devices and systems are described that enable maintaining the temperature of an optical component at a target temperature despite transient fluctuations in the laser beam that illuminates the component. One example method includes preheating the optical component to a target temperature value by applying an external heat source to the optical component. The optical component has an initial thermal resistance and heat sink temperature while being preheated. Next, the laser is turned on, and the external heat source is removed or reduced, while changing one or both the thermal resistance or heat sink temperature from their initial values to lower values to maintain a temperature of the optical component at the target temperature value while the laser source is illuminating the optical component.

A laser optical fiber tray is generally presented. In some embodiments, the optical fiber tray comprises an enclosure having an opening in a bottom of the enclosure to accept a feeding fiber exiting from a top of a laser system rack, an opening in a side of the enclosure to allow passage of the feeding fiber out of the enclosure, a removable panel to allow access to an interior of the enclosure and two or more coil guides affixed within the interior of the enclosure, the coil guides spaced apart by a distance that defines a minimum diameter for a loop of the feeding fiber to be contained within the enclosure. In some embodiments, the optical fiber tray is mounted to a top panel of the laser system rack. In some embodiments, the optical fiber tray is mounted to a top panel of an external module which is mounted to a top panel of the laser system rack. Other embodiments are also disclosed and claimed.

A gas laser, including: a semiconductor laser, an optical beam-shaping system, a pair of electrodes, a discharge tube, a rear mirror, and an output mirror. The pair of electrodes includes two electrodes. The electrodes are symmetrically disposed at an outer layer of the discharge tube in parallel. The electrodes are connected to a radio-frequency power supply via a matching network, and the electrodes operate to modify working gas in the discharge tube through radio-frequency discharge. The rear mirror and the output mirror are disposed at two end surfaces of the discharge tube, respectively. The rear mirror, taken together with the output mirror and the discharge tube, form a resonant cavity. The output mirror is configured to output a laser beam.

A laser optical fiber tray is generally presented. In some embodiments, the optical fiber tray comprises an enclosure having an opening in a bottom of the enclosure to accept a feeding fiber exiting from a top of a laser system rack, an opening in a side of the enclosure to allow passage of the feeding fiber out of the enclosure, a removable panel to allow access to an interior of the enclosure and two or more coil guides affixed within the interior of the enclosure, the coil guides spaced apart by a distance that defines a minimum diameter for a loop of the feeding fiber to be contained within the enclosure. In some embodiments, the optical fiber tray is mounted to a top panel of the laser system rack. In some embodiments, the optical fiber tray is mounted to a top panel of an external module which is mounted to a top panel of the laser system rack. Other embodiments are also disclosed and claimed.

There may be provided a laser unit including a display configured to display one or both of electric power consumed by the laser unit and electric energy consumed by the laser unit.

Proposed are an apparatus and a method for emitting multi-wavelength lasers. The apparatus for emitting multi-wavelength lasers includes a main body configured to perform overall control and operation, a handpiece which is operated by the control of the main body and is connected to the main body by wire, and a tip capable of being coupled to one side of the handpiece, wherein the main body includes a first power supply part, a display part, a control part, a laser generation part, a temperature control part, and a cooling part, wherein the laser generation part includes a first laser generator and a second laser generator which output lasers of different wavelengths, respectively, and the temperature control part includes a first temperature control part which controls a temperature of the first laser generator, and a second temperature control part which controls a temperature of the second laser generator.

The present invention concerns a device for positioning an optical element, having improved temperature management. The device aims to address, in particular, the adverse effects of prologued exposure of an optical element to high-power illumination devices, more in particular high-power laser beam incidence.

A laser medium unit includes a laser gain medium that is formed in a plate shape, that has a first surface and a second surface, and that generates emission light upon irradiation with excitation light from the first surface; and a light guiding and cooling member connected to the first surface to guide the excitation light toward the first surface and to cool the laser gain medium. The first surface consists of a first region to which the light guiding and cooling member is thermally connected, and a second region other than the first region. An entirety of the second region is thermally isolated from the light guiding and cooling member.

A cooling system for a laser includes: a laser, a housing of the laser having a water inlet and a water outlet; an air cooling mechanism including a first pipeline, an air cooling module, a cooling liquid tank, and a water pump; wherein the air cooling module, the cooling liquid tank, and the water pump are sequentially connected through the first pipeline, both ends of the first pipeline is connected to the water inlet and the water outlet, respectively; the water pump is closer to the water inlet; a water cooling mechanism including a second pipeline and a water chiller in communication with the second pipeline, both ends of the second pipeline being connected to the water inlet and the water outlet, respectively; and a solenoid valve with one inlet and two outlets arranged at a junction of the water outlet, the first pipeline, and the second pipeline.

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency.