Mosaic All-in-One DPSS Q-Switched Lasers0 pages

Mosaic OS
™

OCTAVE SPANNING GROUP DELAY
DISPERSION (GDD) MODULE
Minimum pre-ionization, enhanced coherence lengths and extreme temporal
confinement of the high-order harmonic generation process are only a few of the
benefits resulting from employing near-single-cycle driving pulses in attosecond
science.

The Mosaic OS Advantage
•  ctave spanning GDD management
O
• High throughput
•  DD matched to hollow fiber
G
compressors
•  ompact prealigned housing
C

Octave spanning spectra can be reproducibly generated by coupling sub-30 fs pulses
(Femtopower™) with energies in the multi-mJ range into Hollow Fiber Compressors
(Kaleidoscope™). These continua can now be compressed to sub-4 fs by employing
the Mosaic OS, a dispersion management module based on the most advanced
dispersive mirror technology.
Octave Spanning Dispersion Management
Mosaic OS can support pulse durations below 4 fs. The employed dispersive mirrors
exhibit high reflectance over a bandwidth of 600 nm between 400 nm and 1000 nm
and controlled group delay dispersion (GDD) over more than one optical octave,
between 450 nm and 960 nm. The dispersion of the compressor is matched to the
typical chirp of pulses generated from noble-gas-filled hollow fibers seeded with
sub-30 fs, mJ-level pulses. All mirrors are pre-aligned in a compact, robust housing
equipped with entrance and exit aperture. Mosaic OS is the octave spanning upgrade
to the current dispersive mirror set of your Kaleidoscope hollow fiber compressor.

Reconstructed Trace

Measured Trace

Time Domain

500
600

700
800

60
58

1

56
54

0.8
Intensity (arb. un.)

600
Wavelength (nm)

400

500

Wavelength (nm)

400

Applications

Time Domain

Reconstructeded Trace

700
800

52
50

0.6

48
46

0.4

44
42

• Dispersion management
• 
Few- and single-cycle pulse compression
• 
Attosecond pulse generation

900

900

1000

1000

40

0.2

38
36

0
-50 -40 -30 -20 -10 0 10 20 30 40 50
Delay (fs)

-50 -40 -30 -20 -10 0 10 20 30 40 50
Delay (fs)

-25 -20

-10

0

10

Delay (fs)

Measured FROG trace (left), reconstructed FROG trace (middle) and retrieved temporal intensity
and phase (right) of 3.6 fs pulses compressed with Mosaic OS. Data c/o Dr. A. Cavalieri,
Max-Planck Research Department for Structural Dynamics.

20 25

Phase (radians)

Measured Trace