Signal amplifier PicoFlux HE

RFpicosecond

The PicoFlux HE series are high energy flash lamp pumped picosecond amplifiers designed to deliver high energy picosecond pulses at 1064 nm. These amplifiers offer high pulse energy, excellent pulse-to-pulse energy stability, and superior beam quality, making them ideal for demanding applications such as OPCPA pumping, non-linear optics, and advanced spectroscopy.

Features

• Flash lamp pumped picosecond amplifiers
• Pulse energies up to 2.2 J
• 20 – 300 ps pulse duration
• 10 Hz pulse repetition rate
• Diode pumped regenerative amplifier
• Internal or external seeding source
• Advanced beam shaping for high pulse energy
• Thermally induced birefringence compensated design
• Less than 10 ps RMS jitter synchronization pulses for streak camera triggering
• Control through USB and LAN interfaces with supplied Windows control software (RS232 optional)
• Vacuum image relay system
• Optional temperature stabilized second, third and fourth harmonic generators
• Optional extremely precise synchronization to external RF signal with PLL option
• Optional Gaussian like spatial beam profile with Gaussian fit > 85% in near field
• Optional reduced pulse duration to 20 ps

Applications

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

Description
High energy PicoFlux series amplifiers are designed to produce high energy picosecond pulses at 1064 nm. High pulse energy, excellent pulse-to-pulse energy stability, and superior beam quality make these amplifiers well suited for applications like OPCPA pumping, non-linear optics, and others.

Regenerative amplifier / Power amplifier design
PicoFlux series amplifiers are designed to be seeded by an external seeding source. The diode pumped regenerative amplifier ensures amplification of the seed signal to a stable mJ level pulse for further amplification in linear amplifiers. Advanced beam shaping ensures a smooth, hot-spot-free beam spatial profile at the laser output. Low light depolarization allows high efficiency generation of up to the 4th harmonic with optional built-in harmonic generators. Alternatively, an internal seeder can be provided to meet customer requirements.

Built-in harmonic generators
Angle-tuned non-linear crystal harmonic generators mounted in temperature stabilized heaters are used for second, third, and fourth harmonic generation. The harmonic separation system ensures high spectral purity of radiation and directs it to the output ports.

Simple and convenient laser control
The amplifier can be controlled through USB and LAN interfaces (RS232 as optional). Control software for Windows is supplied for convenient operation from a personal computer.

Options

• Custom pulse duration between 20 ps and 300 ps (shortening below 90 ps reduces output energy proportionally)
• Gaussian like spatial beam profile (reduces output energy of fundamental by ~80%)
• External seeder input via motorized spectral broadening stage (requires >1.5 nJ per pulse @ 800 nm, ≤100 fs)
• Phase Lock Loop (PLL) option for precise lock to external RF signal (electrical to optical signal jitter ≤3 ps)
• Second, third, and fourth harmonic outputs (conversion efficiency from fundamental: ~50%, ~30%, and ~10% respectively; not simultaneous with fundamental output)
• Water-to-air cooling (replaces or supplements water-to-water cooling unit; heat dissipation equals total power consumption)

Specifications

• Model variants: PicoFlux P30010, P60010, P1k10, P2k10
• Output energy (fundamental): 300 mJ, 600 mJ, 1000 mJ, 2200 mJ
• SH output: 200 mJ, 400 mJ, 650 mJ, 1400 mJ
• TH output: 90 mJ, 180 mJ, 300 mJ, 660 mJ
• FH output: 30 mJ, 60 mJ, 100 mJ, 220 mJ
• Pulse repetition rate: 10 Hz
• Pulse duration: 90 ± 10 ps (other durations between 20–300 ps available)
• Pulse energy stability (fundamental): ≤0.6%
• Pulse energy stability (SH): ≤0.8%
• Pulse energy stability (TH): ≤2%
• Pulse energy stability (FH): ≤3%
• Long-term power drift: ±2%
• Beam spatial profile: Super-Gaussian (6-11th order in near field)
• Beam diameter: 9 mm, ~11 mm, ~17 mm, ~23 mm (depending on model)
• Beam pointing stability: ≤30 µrad
• Beam divergence: ≤0.5 mrad
• Pre-pulse contrast: >200:1 (1000:1 available upon request)
• Optical pulse jitter (Trig out): ≤100 ps; (Pre-Trig out): ≤50 ps; (With PLL option): ≤2 ps
• Polarization: linear
• Laser head size (W×L×H mm): 600×1200×300, 600×1500×300, 600×1800×300, 900×1800×300
• Power supply size (W×L×H mm): 553×600×650, 553×600×830, 553×600×1230
• Umbilical length: 2.5 m (up to 10 m available upon request)
• Electrical power: 200–240 V AC, single-phase, 47–63 Hz (P30010, P60010); 208, 380 or 400 V AC, three-phase, 50/60 Hz (P1k10, P2k10)
• Power consumption: ≤2 kVA, ≤2.5 kVA, ≤4.5 kVA, ≤7 kVA
• Water supply: ≤3 l/min (P30010), ≤6 l/min (P60010), ≤12 l/min (P1k10), ≤14 l/min (P2k10), 2 Bar, max 20°C (P2k10: max 15°C)
• Operating ambient temperature: 22 ± 2°C
• Storage ambient temperature: 15–35°C
• Relative humidity (non-condensing): ≤80%
• Room cleanness: ISO Class 7