PL2230 Series - Diode-pumped Nd:YAG Picosecond Lasers

The PL2230 series comprises fully diode-pumped high-pulse energy mode-locked lasers producing < 31 ps pulses with up to 35 mJ @ 50 Hz and up to 15 mJ @ 100 Hz. Excellent short-term and long-term stability and repetition rates up to 100Hz makes the PL2230 series lasers an excellent choice for many demanding scientific applications.

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  • Diode pumped power amplifier producing up to 50 mJ per pulse at 1064 nm
  • Beam profile improvement using advanced beam shaping system
  • Hermetically sealed DPSS master oscillator
  • Diode pumped regenerative amplifier
  • Air-cooled
  • < 31 ps pulse duration
  • Excellent pulse duration stability
  • Up to 100 Hz repetition rate
  • Streak camera triggering pulse with <10 ps jitter
  • Excellent beam pointing stability
  • Thermo stabilized second, third or fourth harmonic generator options
  • PC control trough USB and with supplied LabView™ drivers
  • Remote control via keypad


  • Time resolved spectroscopy
  • SFG/SHG spectroscopy
  • Nonlinear spectroscopy
  • OPG pumping
  • Remote laser sensing
  • Satellite ranging
  • Other spectroscopic and nonlinear optics applications

Innovative design

The heart of the system is a diode pumped solid state (DPSS) master oscillator placed in a sealed monolithic block, producing high repetition rate pulse trains (88 MHz) with a low single pulse energy of several nJ. Diode pumped amplifiers are used for amplification of the pulse to 35 mJ or up to 50 mJ output. The high‑gain regenerative amplifier has an amplification factor in the proximity of 10⁶. After the regenerative amplifier, the pulse is directed to a multipass power amplifier that is optimized for efficient stored energy extraction from the Nd:YAG rod, while maintaining a near Gaussian beam profile and low wavefront distortion. The output pulse energy can be adjusted in approximately 1% steps, while pulse‑to-pulse energy stability remains at less than 0.5% rms at 1064 nm.

Angle-tuned KD*P and KDP crystals mounted in thermostabilised ovens are used for second, third, and fourth harmonic generation. Harmonic separators ensure the high spectral purity of each harmonic guided to different output ports.

Built-in energy monitors continuously monitor output pulse energy. Data from the energy monitor can be seen on the remote keypad or on a PC monitor. The laser provides triggering pulses for the synchronisation of your equipment. The lead of the triggering pulse can be up to 500 ns and is user adjustable in ~0.25 ns steps from a personal computer. Up to 1000 μs lead of triggering pulse is available as a pretrigger feature. Precise pulse energy control, excellent short-term and long-term stability, and a 50 Hz repetition rate makes PL2230 series lasers an excellent choice for many demanding scientific applications.

Simple and convenient laser control

For customer convenience the laser can be operated from personal computer through USB (RS-232 is optional) interface using supplied  LabVIEW™ drivers or from remote control pad with backlit display that is easy to read even while wearing laser safety glasses.

Model 1) PL2230-100 PL2231-100 PL2231-50 PL2231A-50
Pulse energy 2)
    at 1064 nm 3 mJ 15 mJ 35 mJ 50 mJ
    at 532 nm 3) 1.3 mJ 7 mJ 16 mJ 23 mJ
    at 355 nm 4) 0.9 mJ 5 mJ 10 mJ 14 mJ
    at 266 nm 5) 0.3 mJ 1.5 mJ 4 mJ 6 mJ
    at 213 nm 6) please inquire
Pulse duration (FWHM) 7) < 31 ps
Repetition rate 0 - 100 Hz 100 Hz 50 Hz 50 Hz
Beam profile 8) close to Gaussian in near and far fields
Beam quality (M2) < 1.3 < 2.5
Pulse energy stability (Std.Dev.) 9)
    at 1064 nm < 0.2 % < 0.5 %
    at 532 nm < 0.4 % < 0.8 %
    at 355 nm < 0.5 % < 1.1 %
    at 266 nm < 0.5 % < 1.5 %
    at 213 nm please inquire

1) Due to continuous improvement, all specifications are subject to change without notice. Parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 1064 nm and for basic system without options. Specifications for models PL2231A, B and C are preliminary and should be confirmed against quotation and purchase order.

2) Outputs are not simultaneous.

3) For PL2230 series laser with –SH, -SH/TH, -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.

4) For PL2230 series laser with –TH, -SH/TH or -SH/TH/FH option or –SH/TH/FH/FiH module.

5) For PL2230 series laser with -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.

6) For PL2230 series laser with –SH/TH/FH/FiH module.

7) FWHM. Inquire for optional pulse durations in 20 – 90 ps range. Pulse energy specifications may differ from indicated here.

8) Near field Gaussian fit is > 80%.

9) Averaged from pulses, emitted during 30 sec time interval.



Option P20

Provides < 22 ps output pulse duration. Pulse energies are ~ 30 % lower in comparison to the < 31 ps pulse duration version. See table below for pulse energy specifications:

Model PL2231 PL2231A
1064 nm 25 mJ 40 mJ
532 nm 11 mJ 16 mJ
355 nm 7 mJ 10 mJ
266 nm 3 mJ 4 mJ

Option P80

Provides < 88 ps output pulse duration. Pulse energy specifications are same as those of < 31 ps lasers.

Bednarik, A. et al. (2018) An on-tissue Paterno-Büchi reaction for localization of carbon-carbon double bonds in phospholipids and glycolipids by matrix-assisted laser-desorption-ionization mass-spectrometry imaging. Angewandte Chemie, Int. Edition, Vol. 57, No. 37, p. 12092 - 12096

Group: Prof. K. Dreisewerd, University of Münster

Laser: PL2231-100


Matrix-assisted laser desorption ionization mass spectrometry imaging (MALDI-MSI) visualizes the distribution of phospho- and glycolipids in tissue sections. However, C=C double-bond (db) positional isomers generally cannot be distinguished. Now an on-tissue Paternm–Bgchi (PB) derivatization procedure that exploits benzaldehyde as a MALDI-MSI-compatible reagent is introduced. Laser-induced postionization (MALDI-2) was used to boost the yields of protonated PB products. Collision-induced dissociation of these species generated characteristic ion pairs, indicative of C=C position, for numerous singly and polyunsaturated phospholipids and glycosphingolipids in mouse brain tissue. Several db-positional isomers of phosphatidylcholine and phosphatidylserine species were expressed with highly differential levels in the white and gray matter areas of cerebellum. Our PB-MALDI-MS/MS procedure could help to better understand the physiological role of these db-positional isomers.

Full Publication


Chen, L. et al. (2018) Ultra-sensitive mid-infrared emission spectrometer with sub-ns temporal resolution. Optics Express, Vol. 26, No. 12, p.  14859 - 14868

Group: Prof. D. Schwarzer, University of Göttingen

Lasers: PL2231-50, APL2100, PG511


We evaluate the performance of a mid-infrared emission spectrometer operating at wavelengths between 1.5 and 6 µm based on an amorphous tungsten silicide (a-WSi) superconducting nanowire single-photon detector (SNSPD). We performed laser induced fluorescence spectroscopy of surface adsorbates with sub-monolayer sensitivity and subnanosecond temporal resolution. We discuss possible future improvements of the SNSPD-based infrared emission spectrometer and its potential applications in molecular science.

Full Publication

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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt, Germany
Phone: +49 6151 4259 78
Fax: +49 6151 4259 88