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LDH-FA Series

LDH-FA Series

Fiber Amplified Picosecond Laser Diode Heads

Fiber-amplified picosecond laser diode heads deliver high pulse energies, clean temporal profiles, and tunable repetition rates for advanced scientific applications. 266 – 1560 nm
Fiber-amplified picosecond laser diode head from PicoQuant LDH-FA Series
Table of contents

Key Benefits

Higher excitation power
Cleaner time-domain measurements
More flexible experiment design
Reliable performance at high repetition rates
Stable output for quantitative workflows
Precise timing in synchronized setups

Available Configurations

Wavelengths

Wavelength (±10) [nm]
Type
Pulse (FWHM) [ps]
Max. rep. rate [MHz]
Avg. power [mW]
CW power [mW]
266
LDH-P-FA-266
< 80
80
1
-
355
LDH-P-FA-355
< 80
80
5
-
515
LDH-P-FA-515L
< 100
80
20
-
532
LDH-P-FA-530B
< 100
80
4
-
532
LDH-D-FA-530L
< 100
80
50
5
532
LDH-P-FA-530XL
< 100
80
200
-
557
LDH-P-FA-560
< 80
80
200
-
596
LDH-P-FA-595B
< 100
80
1
-
766
LDH-P-FA-765B
< 100
80
15
-
766
LDH-D-FA-765L
< 100
80
40
3
766
LDH-P-FA-765XL
< 100
80
100
-
774
LDH-P-FA-775B
< 100
80
15
-
774
LDH-P-FA-775XL
< 100
80
100
-
1030
LDH-P-FA-1030
< 100
80
50
-
1063
LDH-P-FA-1060
< 100
80
50
-
1063
LDH-P-FA-1060XL
< 100
80
450
-
1532
LDH-P-FA-1530
< 100
80
50
-
1532
LDH-P-FA-1530XL
< 100
80
450
-
1550
LDH-P-FA-1530
< 100
80
50
-
1550
LDH-P-FA-1530XL
< 100
80
450
-
Detail explanations and measurements conditions for the listed specifications are provided in the datasheet.

Specifications

Type (LDH-)Value
Power stability (12 hours) (ΔT (ambient) < 0.5 K)all types< 3 % RMS
Polarization Extinction Ratio (PER)P-FA-266/ 355/ 515L/ 530L/ 530XL/ 560/ 765XL/ 775XL > 1:100 (> 20 dB)
P-FA-530B/ 595B/ 765B/ 775B/ 1030/ 1060/ 1060XL/ 1530/ 1530XL> 1:10 (> 10 dB)
Spectral width (nm)all types<< 1 nm
Dimension (l x w x h)P-FA-530B/ 595B/ 765B/ 775B/ 1030/ 1060/ 1530200 × 100 × 35 mm (without fiber)
P-FA-515L/ 530L/ 530XL/ 1060XL/ 1530XL214 × 74 × 100 mm
P-FA-560/ 765L/ 765XL223 × 74 × 100 mm
P-FA-266/ 355272.6 × 74 × 100 mm (incl. Clean-up filter)
Repetition ratesP-FA-530B/ 530L/ 595B/ 765B/ 765L/ 765XL/ 775B/ 775XL/ 1030/ 1060/ 1530< 10 Hz to 80 MHz
P-FA-266/ 355/ 515L/ 530XL/ 560/ 1060XL/ 1530XL1 MHz to 80 MHz

Download the datasheet here.

Laser Safety Warning Label (Class 3B)
Laser Safety Warning Label (Class 3B)

All Information given here is reliable to our best knowledge. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications and external appearances are subject to change without notice.

High-Power Picosecond Excitation Across UV, Visible and IR

Schematic representation of a Master Oscillator Fiber Amplifier (MOFA) architecture illustrating the separation of pulse generation, fiber-based power amplification, and optional nonlinear frequency conversion.

Fiber-Amplified Picosecond Excitation with Broad Spectral Coverage

The LDH-FA Series delivers high-power picosecond excitation across a broad spectral range from deep UV to the near-infrared. These laser heads use a Master Oscillator Fiber Amplifier (MOFA) concept with optional frequency conversion to provide short, clean pulses with variable repetition rates up to 80 MHz. The amplified infrared seed enables efficient generation of UV, visible and infrared outputs while preserving pulse quality and stability. Depending on the wavelength, average powers reach up to 450 mW, which supports demanding experiments in fluorescence, microscopy and materials research. Both fiber-coupled and free-space versions are available to ensure flexible and reliable integration into a wide variety of scientific setups.

Sepia PDL 828 operating with LDH laser heads and compatible with the LDH-FA Series light sources for flexible multi-wavelength excitation.

Compatible Laser Driver with LDH-FA

The LDH-FA Series is fully compatible with the Sepia PDL 828, Sepia PDL 810 and PDL 800-D laser drivers. This ensures reliable operation across a wide range of repetition rates, trigger modes, and wavelength configurations, allowing straightforward integration into both single- and multi-wavelength experimental setups.

Streak camera measurement showing a pulse width of 47.4 ps (FWHM) for the LDH-P-FA-355.

Suitable for All Major Scientific Disciplines

The LDH-FA Series provides the spectral range, pulse quality and power levels required across a wide spectrum of scientific disciplines. Its tunable picosecond excitation supports studies in life and materials science, as well as investigations in emerging fields such as quantum technologies and advanced optical sensing including LiDAR. By combining flexible wavelengths with high pulse energies and stable timing performance, these laser heads offer a reliable foundation for experiments that demand precise control of excitation conditions across diverse scientific domains.

Optional Fiber Coupling for Enhanced Beam Delivery

LDH-FA heads can be ordered with fiber coupled output for use with single mode, polarization maintaining single mode or multi-mode fibers. Coupling efficiencies typically reach above 60 % for single mode and above 80 % for multi-mode. Each unit is aligned prior to delivery to provide a stable, well-defined beam at the fiber output. 

Laser Combining Unit (LCU) integrating multiple picosecond laser heads for fiber-coupled excitation.

Laser Combining Unit for up to 5 Laser Lines

For multi-color excitation, several LDH laser heads can also be combined into a single polarization-maintaining fiber using PicoQuant’s Laser Combining Unit (LCU), enabling compact and flexible multi-wavelength excitation configurations.

  • Wavelength 375 nm to 900 nm
  • Up to 5 laser lines
  • Polarisation maintaining singlemode output fiber
  • Flexible configurations
Advanced Laser Operation Modes

Pulsed, Burst, and CW Modes

In materials science, choosing the right laser operation mode is key to unlocking accurate and insightful experimental results. Relevant modes: pulsed, burst, CW, fast switched CW.
Discover operation modes
Discover How Pulsed, Burst, and CW Modes Advance Your Research Goals
Scientific Insights & Resources

Latest Blog Articles

Schematic of photon-induced charge conversion between the negative NV⁻ and neutral NV⁰ states in a nanodiamond.
July 11, 2021

Autocorrelation Reveals NV Center Charge Dynamics

Schematic diagram of a master oscillator fiber amplifier showing a gain-switched seed laser, optical isolator, cladding-pumped fiber amplifier, and nonlinear crystal stage for frequency conversion.
February 11, 2026

Master Oscillator Fiber Amplifier (MOFA) in Picosecond Laser Design

Schematic of photon-induced charge conversion between the negative NV⁻ and neutral NV⁰ states in a nanodiamond.
July 11, 2021

Autocorrelation Reveals NV Center Charge Dynamics

Schematic diagram of a master oscillator fiber amplifier showing a gain-switched seed laser, optical isolator, cladding-pumped fiber amplifier, and nonlinear crystal stage for frequency conversion.
February 11, 2026

Master Oscillator Fiber Amplifier (MOFA) in Picosecond Laser Design

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Technical Documentation and Data

Technical Downloads

Datasheet LDH-FA

The LDH-FA Series datasheet provides detailed specifications of these high-power picosecond laser diode heads offering short pulses, stable output, and multiple wavelengths.

Dimension Sheet LCU 4-Channel Laser Coupling Unit

Showing mechanical layout, LDH mounting positions, fiber input configuration, and overall system dimensions

Dimension Sheet LDH-P-FA

Showing bulk housing design, mounting hole pattern, fiber output, cable routing, and overall mechanical dimensions

Dimension Sheet LDH-P-FA-266 and LDH-P-FA-355

Showing bulk housing design, mounting dimensions, and cable connections

Dimension Sheet LDH-P-FA-530B

Showing flat housing design, mounting hole positions, cable routing, fiber output, and mechanical dimensions

Dimension Sheet LDH-P-FA-560 and LDH-P-FA-765XL

Showing bulk housing design, mounting holes, cable routing, and mechanical dimensions

Dimension Sheet LDH-P-FA-1060 and LDH-P-FA-1530

Showing flat housing design, mounting hole positions, and cable connections

Expand Your System

Compatible Laser Driver

Combine compatible components to build a complete system tailored to your experimental requirements and measurement workflows.

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PicoQuant PDL 800-D picosecond pulsed diode laser driver for LDH and PLS light sources
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