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  • Spitlight Passive SLM
Aug 2009
InnoLas Laser GmbHRequest Info
Single-Longitudinal-Mode Laser
KRAILLING, Germany, Aug. 25, 2009 – InnoLas Laser GmbH has announced the Spitlight Passive SLM, a single-longitudinal-mode laser that is a flashlamp pumped with a passive Q-switch and double amplifier transition. The combination of innovative optical components results in a high-quality beam profile. The central element is a phase-conjugate mirror that enables a quality loss-free double amplifier transition.

InnoLas_Laser_Spitlight_SLM.jpgThe phase-conjugate mirror produces a spatially accurate and diffusion-free reflection of the beam. Combining wavefront conjugation with a pinhole-based spatial filter, the beam passes the amplifier repeatedly without any loss of quality. Thus the laser guarantees a pure Gaussian or Hypergaussian beam profile in the longitudinal and transversal single-mode regimes.

The virtually flattop beam profile turns the laser into a suitable beam source for all applications that require high beam quality and focus. The diffraction-free profile of the pure single-longitudinal-mode beam is realized without any loss of power density so that the system can be used for applications with high impulse power. With a coherence length close to the transform limit, the laser is suitable also for use in dynamic holography and other holographic applications such as pulse compression.

Another advantage of the high beam quality is in the use of frequency-doubling crystals. The laser’s efficiency is well-tested for frequency multiplication up to the fifth harmonic, achieving record efficiency at 1064, 532, 355, 266 and 213 nm, respectively. The absence of diffraction rings reduces the strain of the crystals for mirror separation which, in turn, increases the life span of the crystals. Improving the beam properties over the operating time of a crystal reduces the maintenance costs for the laser system.

For more information, visit:  

InnoLas Laser GmbH
Robert-Stirling-Ring 2
82152 Krailling
Phone: +49 89 899 360 0
Fax: +49 89 899 360 16 28 1111


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A device that converts stored electrical energy into light by means of a sudden electrical discharge.
Gaussian beam
A beam of light whose electrical field amplitude distribution is Gaussian. When such a beam is circular in cross section, the amplitude is E(r) = E(0) exp [-(r/w)2], where r is the distance from beam center and w is the radius at which the amplitude is 1/e of its value on the axis; w is called the beamwidth.
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
pulse compression
A means of achieving higher peak powers and more efficient harmonic generation by narrowing the pulse width and thus increasing the frequency bandwidth of the output of CW mode-locked lasers. Compression can be achieved by launching the pulse into a single-mode fiber and passing it through a pair of diffraction gratings.
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