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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt
Telefon: +49 6151 4259 78
Telefax: +49 6151 4259 88 
E- mail: info [at] topag.de 

ORPHEUS-PS Pikosekunden

734
Pikosekunden-OPA-System ORPHEUS-PS

Orpheus-ps

ORPHEUS-PS liefert schmalbandge Pikosekunden-Pulse im Abstimmbereich von 315nm bis 5µm. Zum Betrieb des Orpheus-PS wird neben dem Pumplaser Pharos noch ein spezieller Frequenzkonverter SHBC benötigt. Das schmalbandige grüne Licht des SHBC pumpt den Orpheus-PS. Ein synchroner Betrieb von Pikosekunden- und Femtosekunden-OPA ermöglicht neuartige Experimente in der zeitaufgelösten Pump-Probe Spektroskopie.

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Mimetypes-application-pdf-iconORPHEUS-PS                 Mimetypes-application-pdf-iconSHBC-515

Bezeichnungen der Tabs

  • Beschreibung
  • SHBC-515
  • Spezifikationen
Tab 1

Features

  • Built on well known TOPAS-800 OPA basis
  • Continuously tunable picosecond pulses in 315 – 2600 nm
  • Near bandwidth limited output, <15 cm-1 spectral width
  • High stability is possible by seeding with femtosecond white light continuum
  • Repetition rate up to 100 kHz
  • Full computer control via USB port and dedicated software

Applications

  • Stimulated Raman Spectroscopy
  • Surface sum-frequency spectroscopy

ORPHEUS-PS is a narrow bandwidth optical parametric amplifier of white light continuum, designed for PHAROS pump laser. This device is pumped by the picosecond pulses produced in SHBC-515 narrow bandwidth second harmonic generator, and seeded by white light continuum generated by femtosecond pulses. This enables to achieve very high pulse to pulse stability compared to other methods of generating tunable picosecond pulses. The white light generation module is also integrated into the same housing as amplification modules, enabling even better long term stability and ease of use. The system features high conversion efficiency, nearly bandwidth and diffraction limited output, full computer control via USB port and LabVIEW drivers. A part of the PHAROS laser radiation can be split to simultaneously pump a femtosecond OPA, providing broad bandwidth 650 nm – 16 μm tunable pulses, giving access to the complete set of beams necessary for versatile spectroscopy applications, for example narrow band Raman spectroscopy measurements, or surface sum-frequency spectroscopy.

Tab 2
Features

  • High conversion efficiency to the narrow bandwidth second harmonic
  • Small footprint

Pharos harmonic generator product line features second harmonic bandwidth compressor abbreviated as SHBC. Device is dedicated for the formation of narrow bandwidth picosecond pulses from broadband output of ultrafast laser. In Pharos platform SHBC is used to create flexible setups providing fixed wavelength or tunable narrow bandwidth ps pulses in combination with tunable wavelength broadband fs pulses. This feature is used in spectroscopy applications for mixing of wide and narrow bandwidth pulses such as sum frequency spectroscopy (SFG).

The principal of operation of SHBC is based on generation of sum frequency of two inversely chirped broadband pulses. SHBC includes two compressors producing inverse chirped pulses which are non-collinearly mixed in BBO crystal. Such setup allows efficient SH generation compared to other narrow bandwidth formation techniques therefore providing high pulse energies.

SHBC is used to pump ORPHEUS-PS optical parametric amplifier.

 

Tab 3
Tuning range 630 – 1020 nm signal and 1040 – 2600 nm idler
Pulse energy conversion efficiency >20 % (of pump from SHBC)
Pulse energy stability <2.0 % rms @ 700 – 960 nm and 1100 – 2000 nm
Spectral width <20 cm-1 @ 700 – 960 nm and 1100 – 2000 nm
Pulse duration 2 – 4 ps depending on pump pulse duration from SHBC-515
Time-bandwidth product <1.0

Requirements for the input pulses:
1) Picosecond 515 nm, produced by SHBC-515: energy 120 μJ – 1 mJ, pulse duration 2 – 5 ps, spectral width <10 cm-1;
2) Femtosecond 1030 nm: energy 2 – 3 μJ, pulse duration <300 fs.

 

SHBC specifications

Parameter Value
Pump source Pharos laser, 1030nm, 70-120 cm-1
Output wavelength 515 nm
Conversion ratio > 30 %
Output pulse bandwidth < 10 cm-1

 

Tab 4

Tab 4 Inhalt

Tab 5
Bild 1
 Pharos Hintergrund
Beschreibung 1
 
Bild 2
 pharos oem
Beschreibung 2
 PHAROS OEM version
Bild 3
 
Beschreibung 3
 
Bild 4
 
Beschreibung 4
 
Bild 5
 
Beschreibung 5
 
Bild 6
 
Beschreibung 6
 
Bild 7
 
Beschreibung 7
 
Bild 8
 
Beschreibung 8
 
Bild 9
 
Beschreibung 9
 
Bild 10
 
Beschreibung 10