Features

• Hermetically sealed DPSS master oscillator
• Diode pumped regenerative amplifier
• Diode pumped power amplifier producing up to 25 mJ per pulse at 1064 nm
• Air-cooled
• < 30 ps pulse duration
• Excellent pulse duration stability
• Up to 50 Hz repetition rate
• Streak camera triggering pulse with <15 ps jitter
• Excellent beam pointing stability
• Thermo stabilized second, third or fourth harmonic generator options
• PC control trough USB and with supplied LabView^TM drivers
• Remote control via keypad

Applications

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

Ekspla is proud to introduce the first commercial fully diode pumped high pulse energy mode-locked laser, producing 28 ps pulses with up to 25 mJ pulse energy at a 50 Hz pulse repetition rate.

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 25 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 from 2.5 mJ to 25 mJ, 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. Harmonics 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. If required, up to 1000 μs lead of triggering pulse is available when a PRETRIG option is installed.
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 controlled through a user-friendly remote control pad or USB interface. The remote pad allows easy control of all parameters and features a back-lit display that is easy to read even with laser safety eye-wear.
Alternatively, the laser can be controlled from a personal computer with supplied software for a Windows^TM operating system. LabView^TM drivers are supplied as well.

1) All specifications are subject to change without notice. The parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless statet otherwise all specifications are measured at 1064 nm.
2) For -SH option. Outputs are not simultaneous. Please inquire for pulse energies at other wavelengths.
3) For -TH option. Outputs are not simultaneous. Please inquire for pulse energies at other wavelengths.
4) For -FH option. Outputs are not simultaneous. Please inquire for pulse energies at other wavelengths.
5) Averaged from 300 pulses.
6) Inquire for optional pulse durations in 20-100 ps range.
7) Measured over 1 hour period when ambient temperature variation is less than ±1 °C.
8) Fixed pulse repetition rate should be specified when ordering. Inquire for up to 100 Hz or variable pulse repetition rates.
9) <15 ps jitter is provided with PRETRIG option.
10) SYNC OUT lead or delay can be adjusted with ~0.25 ns steps in specified range.
11) Average of X- and Y-plane full angle divergence values measured at the 1/e2 level at 1064 nm.
12) RMS value measured from 300 shots.
13) Beam diameter is measured at 1064 nm at the 1/e² level.
14) Adequate room air conditioning should be provided

• Option PRETRIG provides low jitter pulse for streak kamera triggering.
• Option P20 provides 20±2 ps output pulse duration. Pulse energies are 30% lower in comparison to the 30 ps pulse duration version.
• Option P80 provides less than 80 ps output pulse duration. Pulse energy specifications are 50% higher in comparison to the 30 ps pulse duration version.
• Option PLL allows locking the master oscillator pulse train repetition rate to an external RF generator, enabling precise external triggering with low jitter.