pulseSlicer



Narrowing the Spectrum of the Pulse with a Spectrum Slicer / Laser Monochromator


Spectral Cutting with pulseSlicer

The principle task of the spectrum slicer (or laser monochromator) pulseSlicer is to cut out a very narrow spectral part of an ultra-short laser pulse. This function is similar to a band pass filter at a first glance. For example, in the spectral domain this could mean the narrowing of the spectral width of Ti:Sapphire pulses at 800 nm from Δλ = 7 nm to Δλ = 0.35 nm. In the time domain this corresponds with to a pulse stretching from approximately 140 up to 2700 fs.

Standard laser sources typically generate fixed or slightly variable pulses only. Therefore, the pulseSlicer acts as a spectrum slicer and is an economic solution for narrowing broadband laser pulses by spectral cutting. An optical system disperses the pulses spatially, and in the plane where the spectrum is spatially dispersed, the spectrum is controlled via a mask. Afterwards, the dispersed pulse is recollimated.

With the narrowing of the spectrum the spectral pulse width is modified accordingly, resulting in longer pulses. The transmitted power is reduced proportionally to the amount of spectral cutting, but many applications are not power limited when considering the available laser input power.

At a Glance

  • Easily variable output bandwidth / pulse duration
  • Simple solution for narrowing broadband laser pulses
  • Automatisation available
Principle of a spectrum slicer: Pulse spectrum of the incident pulses (blue) and pulse spectrum (red) shaped by the spectrum slicer

Specifications

pulseSlicer Specification    
Wavelength Ranges700 ... 1100 nm or
1000 ... 1600 nm
(others on request)
Min. Output Bandwidth Delta Lambda Out (dLOut)> 0.3 nm
Static Transmission Ts0.5 ... 0.7 (depending on wavelength range)
Overall ThroughputTs * dLOut / dLIn

Datasheets & Brochures

pulseSlicer (pdf / english)


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China 100090

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