pulseSlicer
Spectrum Slicer: Narrowing the Bandwidth of Pulsed Lasers by Spectral Cutting
Narrowing the Spectral Bandwidth of Pulsed Lasers by Spectral Cutting 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.
pulseSlicer in Combination with Pulsed Laser Sources
Automized, narrow-band laser source
Large wavelength tuning range
User adjustable spectral bandwidth and output pulse durations
High spectral power density compared to common lasers or OPOs
High repetition rates (80 / 160 / 320 MHz) to cope with weak single-photon signal detection
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 Specifications, Customized specifications possible pulseSlicer F25 NIR
Wavelength [nm]
min. Bandwidth [nm]
max. Pulse duration [ps]*
Bandwidth [cm-1]
650
700
740
800
900
1000
10800.29
0.28
0.28
0.27
0.26
0.24
0.232.1
2.6
2.9
3.5
4.6
6.1
7.56.9
5.7
5.1
4.2
3.2
2.4
2.0pulseSlicer F25 IR
Wavelength [nm]
min. Bandwidth [nm]
max. Pulse duration [ps]*
Bandwidth [cm-1]
1000
1100
1300
1500
16000.24
0.24
0.2
0.12
0.066.1
7.4
12.4
27.6
62.72.4
2.0
1.2
0.5
0.2pulseSlicer F50 IR
Wavelength [nm]
min. Bandwidth [nm]
max. Pulse duration [ps]*
Bandwidth [cm-1]
1100
1300
1500
16000.12
0.1
0.06
0.0314.8
24.8
55.1
125.41.0
0.6
0.3
0.12pulseSlicer F100 NIR
Wavelength [nm]
min. Bandwidth [nm]
max. Pulse duration [ps]*
Bandwidth [cm-1]
650
700
740
800
900
10000.041
0.039
0.037
0.034
0.027
0.01715.1
18.5
21.8
27.7
44.1
86.51.0
0.8
0.7
0.5
0.3
0.17* max. Pulse Duration
based on incoming pulse duration of 2 ps
Static Transmission T
0.5 ... 0.7 (depending on wavelength range)
Overall Throughput
T * dλ Out / dλ In
描述 [描述] Spectrum Slicer: Narrowing the Bandwidth of Pulsed Lasers by Spectral Cutting