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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 

PHAROS Laser

640
Femtosekunden-Laser PHAROS

Pharos Hintergrund

PHAROS ist ein diodengepumpter Femtosekundenlaser mit integriertem Oszillator und Verstärkersstufe. PHAROS liefert modellabhängig Pulsenergien bis zu 2mJ und Ausgangsleistungen bis 20W. Die Pulsdauer ist von 200fs bis 15ps variabel einstellbar. Der Laser kann bei beliebigen Repetitonsraten zwischen Einzelschuss und 1MHz betrieben werden. Der kompakte Industrielaser hat sich im 24/7 Dauerbetrieb bewährt.

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Mimetypes-application-pdf-iconPHAROS                       Mimetypes-application-pdf-iconFrequency generators for PHAROS

Bezeichnungen der Tabs

  • Beschreibung
  • Spezifikationen
  • Harmonischen
  • I-OPA
  • Bilder
Tab 1

Features

  • Pulse duration <190 fs - 10 ps
  • Pulse energy up to 2 mJ
  • Average power up to 20 W
  • Flexibility in repetition rate: single-pulse to 200 kHz (extendable to 1 MHz)
  • Broad range of wavelength conversion options (harmonic generators, OPA, NOPA, continuum generators)
  • Rugged mechanical design with sealed modules replaceable on field


Applications

  • Micromachining
  • Micro- and nano-structuring
  • Nonlinear optics
  • Time-resolved spectroscopy
  • Biomedical applications


“PHAROS” is built upon traditional chirped pulse amplification technique, employing seed oscillator, regenerative amplifier and pulse stretcher/compressor modules. Kerr lens mode-locked oscillator, incorporating chirped mirrors for compensation of group velocity dispersion, typically delivers >700 mW output with sub-80 fs pulse duration. Regenerative amplifier is based on Yb:KGW lasing medium. Amplifier is non-collinearly pumped by one or two (respectively 4W or 6-15 W “PHAROS”) Light Conversion proprietary design high-brightness diode bar modules delivering up to 60 W of power. Conventional low loss BBO Pockels cells are used in regenerative amplifier and pulse picker at repetition rates up to 200 kHz (extendable to 1 MHz). The stretcher/compressor module is based on a single high efficiency  transmission grating with excellent power handling capability. Timing electronics, controls the operation of Pockels cells and monitors performance of the whole system. Separate modules of “PHAROS” system are interlinked by a set of industrial CAN bus microcontrollers. Operating parameters are adjustable via remote control module or external PC connected via USB interface.

Standard "PHAROS" system delivers pulse energies up to 0.2 mJ or 0.4 mJ and minimum pulse duration shorter than 290 fs, somewhat varying with the repetition rate due to change in saturation level of the laser crystal. Short Pulse model PHAROS-SP incorporates modified resonator cavity with increased amplification bandwidth consequently delivering up to 1.5 mJ pulse energies and reduced pulse duration to <190 fs.

Tab 2
PHAROS 4W 6W 10W 15W 20W SP SP 1.5 mJ 2mJ
Max. average power 4W 6W 10W 15W 20W 6W
Min. pulse duration < 290 fs < 190 fs < 300 fs
Pulse duration range < 290 fs - 10 ps < 190 fs - 10 ps < 300 fs - 10 ps
Max. pulse energy > 0.2 mJ or > 0.4 mJ > 1 mJ > 1.5 mJ > 2 mJ
Beam quality TEM00; M² < 1.2 TEM00; M² < 1.3  
Repetition rate Single pulse - 200 kHz (extendable to 1MHz)1)    
Center Wavelength 1028 +/- 5 nm     
Output pulse stability < 0.5 % RMS over 24 hours2)    
Pre-pulse contrast < 1 :1000     
Post-pulse contrast < 1 : 200     
Polarization    Linear, horizontal  
Beam pointing stability < 20 µrad/°C  
Beam divergence 1.1x diffraction limited (of M² < 1.2 or M² < 1.3 beam)  
Burst output Pulse burst output on trigger signal.
Every n pulse continuous or trigger controlled out put
(pulse temporal spacing in burst corresponds to amplifier repetition rate)
 
Oscillator output Optional, typical output 0.5-1 W3), 76 MHz, < 100 fs  

1) Some particular repetition rates are software denied due to system design
2) Under stable environmental conditions
3) Available up to 6W.

Please contact us for customized version of "PHAROS".

Utility requirements

Electric 110 VAC, 50-60 Hz, 20 A
220 VAC, 50-60 Hz, 10 A
Room temperature 15-30 ºC (air conditioning recommended)
Relative humidity 20-80 % (non condensing)

Tab 3

PHAROS laser can be equipped with optional auto­mated harmonics modules. Selection of fundamental (1030 nm), second (515 nm), third (343 nm), fourth (257 nm) or fifth (206 nm) harmonic output is available by software control. Harmonic generators are designed to be used in industrial applications where a single output wavelength is desired. Modules are mounted directly on the output of the laser and integrated into the system.

Model 2H 2H-3H 2H-4H 4H-5H
Output wavelength (automated selection) 1030 nm / 515 nm 1030 nm / 515 nm / 343 nm 1030 nm / 515 nm / 257 nm 1030 nm / 257 nm / 206 nm
Input pulse energy 20 - 1000 µJ 50 - 1000 µJ 20 - 1000 µJ 200 - 1000 µJ
Pump pulse duration 190 - 300 fs
Conversions efficiency > 50 % (2H) > 50 % (2H) / > 25 % (3H) > 35 % (2H) / > 10 % (4H)1) > 10 % (4H)1) / > 5 % (5H)
Beam quality (M2) < 200 µJ pump < 1.4 (2H) < 1.4 (2H) / < 1.7 (3H) < 1.4 (2H) / n/a (4H) n/a
Beam quality (M2) > 200 µJ pump < 1.7 (2H), < 1.5 typical < 1.7 (2H), < 1.5 typical / < 2 (3H), < 1.7 typical < 1.7 (2H), < 1.5 typical / n/a (4H) n/a

1) Max 1 W output.

 

Repetition rate harmonics

Harmonics energy vs pulse repetition rate of PHAROS

Pharos laser drawing

PHAROS laser drawing with integrated automatic harmonic generator

Tab 4

I‑OPA is an optical parametric amplifier of white‑light continuum pumped by the PHAROS laser. This OPA is focused on generating long‑term stable output with reliable and hands‑off operation. Manually tunable output wavelength extends the application possibi­lities of a single laser source instead of requiring multiple lasers based on different technologies.

In comparison to standard ORPHEUS line of devices, the I‑OPA lacks only computer controlled wavelength selection. On the other hand, in‑laser mounted de­sign provides mechanical stability and eliminates the effects of air‑turbulence, ensuring stable long‑term performance and minimizing energy fluctuations.

Model I-OPA I-OPA-F I-OPA-ONE I-OPA-CEP
Based on OPA ORPHEUS ORPHEUS-F ORPHEUS-ONE -
Pump pulse energy 10 - 500 µJ 10 - 400 µJ 20 - 500 µJ 150 - 500 µJ
Pulse repetition rate Up to 1 MHz Up to 100 kHz
Signal 630 - 1030 nm 650 - 900 nm 1350 - 2060 nm -
Idler 1030 - 2600 nm 1200 - 2500 nm 2060 - 4500 nm 1400 - 2500 nm
Conversion efficiency signal+idler combined > 12 % > 12 % > 15 % > 10 %
Pulse energy stability < 2 % STD over 1 min. 1) 650 - 950 nm / 1150 - 2000 nm 650 - 850 nm / 1350 - 2000 nm 1500 - 3500 nm 1400 - 2000 nm
Pulse bandwidth 3) 100 - 150 cm-1 200 - 600 cm-1 80 - 200 cm-1 ~150 cm-1
Pulse duration 2) 150 - 250 fs 30 - 80 fs 200 - 300 fs < 200 fs
Applications Micro-machining / Microscopy / Spectroscopy Nonlinear microscopy / Ultrafast spectroscopy Micro-machining / Mid-IR generation OPCPA front-end

1) Better stability can be specified for a specific wavelenth (e.g. < 1 % STD at 800 nm).

2) Output pulse duration depends on wavelength and pump laser pulse duration.

3) I-OPA-F outputs broad bandwidth pulses which are compressed externally.

 

Pharos drawing I OPA 1

PHAROS with I-OPA output ports

Pharos drawing I OPA 2

PHAROS with I-OPA-F and compressors for signal and idler

Tab 5
Bild 1
 Pharos
Beschreibung 1
 PHAROS
Bild 2
 pharos oem
Beschreibung 2
 PHAROS OEM version
Bild 3
 pulse energy vs repetition rate
Beschreibung 3
 Pulse energy vs.repetition rate
Bild 4
 Pulse duration
Beschreibung 4
 PHAROS pulse duration
Bild 5
 Pharos spektrum
Beschreibung 5
 PHAROS spectrum
Bild 6
 Pharos laser drawing
Beschreibung 6
 PHAROS laser drawing
Bild 7
 Pharos beam profile near field
Beschreibung 7
 Typical PHAROS near field beam profile at 200kHz
Bild 8
 Pharos beam profile far field
Beschreibung 8
 Typical PHAROS far field beam profile at 200kHz
Bild 9
 
Beschreibung 9
 
Bild 10
 
Beschreibung 10