A laser optical fiber tray is generally presented. In some embodiments, the optical fiber tray comprises an enclosure, coupled with a laser system rack, having an opening in the enclosure to accept a feeding fiber exiting from the laser system rack, an opening in the enclosure to allow passage of the feeding fiber out of the enclosure, and a user-accessible space within the enclosure to contain a length of the feeding fiber. 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 laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path.

A laser marking system for marking a product includes a marking head having an electromagnetic radiation steering mechanism configured to steer electromagnetic radiation to address a specific location within a two-dimensional field of view. The electromagnetic radiation steering mechanism comprises a first optical element having an associated first actuator configured to rotate the first optical element about a first rotational axis to change a first coordinate of a first steering axis in the two-dimensional field of view and a second optical element having an associated second actuator configured to rotate the second optical element about a second rotational axis to change a second coordinate of a second steering axis in the two-dimensional field of view. The electromagnetic radiation steering mechanism comprises an electromagnetic radiation manipulator configured to introduce a difference between a first angle and a second angle (defined between the first and second rotational and steering (respectively) axes).

A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing. The laser-housing is formed from a hollow extrusion. An interior surface of the extrusion provides a ground electrode of the laser. Another live electrode is located within the extrusion, electrically insulated from and parallel to the ground electrode, forming a discharge-gap of the slab-laser. The electrodes are spaced apart by parallel ceramic strips. Neither the extrusion, nor the live electrode, include any direct fluid-cooling means. The laser-housing is cooled by fluid-cooled plates attached to the outside thereof.

The disclosure relates to a device for generating pulsed laser radiation, having a laser resonator which contains a laser-active medium (EDF1, EDF2), a pump light source which optically pumps the laser-active medium (EDF1, EDF2) at a pump power (P), and a mode coupling device which is intended to effect phase coupling of the modes of the laser radiation circulating in the laser resonator, so that the spectrum of the laser radiation forms a frequency comb. The disclosure also relates to a method for designing or operating such a device. The disclosure proposes that phase noise of the frequency comb, i.e. the width of spectral lines of the frequency comb, is minimized at a predetermined useful frequency by adjusting the frequency of the pump power fixed point (vfix.sub.,pump) of the frequency comb. For this purpose, at least two of the parameters pump power (P), group delay dispersion of the laser resonator, non-linearity of the laser resonator and amplification of the laser-active medium (EDF1, EDF2) are optimized in an iterative process until the pump power fixed point (vfix.sub.,pump) is set to the desired frequency and the quadratic increase in the width of the spectral lines of the frequency comb with the frequency spacing of the spectral lines from the useful frequency is simultaneously minimized. The disclosure provides a fiber-based laser device for generating an fs frequency comb with maximum passive stability and a simple and compact design at the same time. The achievable linewidths of the comb lines lie over a broad spectral range in the kHz and sub-kHz range.

In a laser apparatus, transmission of vibration, which is generated in a portion that generates a cooling gas flow, to a laser unit is suppressed, and heat generated from the laser unit is efficiently dissipated. A laser unit is housed inside a box-shaped housing having a plurality of faces. A frame supports a laser unit with a first mount interposed therebetween inside the housing. The frame has a through-hole penetrating from one face side to the other face side. A blower fan generates a flow of cooling gas for cooling the laser unit. The blower fan is attached to, for example, a second housing so as to face the laser unit. The cooling gas moves through the through-hole of the frame between the blower fan and the laser unit.

The present application discloses various embodiments of a high peak power laser system which includes a diode pump source configured to directly pump at least one optical crystal positioned within the laser cavity, the diode pump source emitting at least one pump beam comprised of two or more vertically stacked optical signals having a wavelength from about 400 nm to about 1100 nm., the optical crystal configured to output at least one optical output having a wavelength of about 750 nm to about 1100 nm and having an output power of about 25 kW or more.

An optical fiber connection unit able to efficiently remove heat generated in the optical fiber connection unit. The optical fiber connection unit includes a closed circulation path, through which coolant for eliminating heat generated in the optical fiber connection unit by a laser beam propagating through the optical fiber connection unit circulates, and a coolant circulation device for causing the coolant to flow and circulate in the circulation path.

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.

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.