Narrow-Bandwidth Optical Parametric Amplifier TOPAS-SHBC-400

  • Femtosecond pulse conversion to < 20 cm-1 spectral bandwidth
  • 240 nm – 10 μm tuning range
  • Up to 4 mJ pump pulse energy
  • High output stability

Features

  • Femtosecond pulse conversion to < 20 cm-1 spectral bandwidth
  • 240 nm – 10 μm tuning range
  • Up to 4 mJ pump pulse energy
  • High output stability

TOPAS-SHBC-400 combines a second harmonic bandwidth compressor (SHBC) and an optical parametric amplifier (OPA) for the generation of tunable pulses with a spectral bandwidth of 3 – 20 cm-1 when pumped by femtosecond pulses with a spectral bandwidth of 150 – 500 cm-1. The device is designed to be pumped by a fundamental harmonic of a femtosecond Ti:Sapphire laser and covers a wavelength range from 480 to 2400 nm. Optional frequency mixers extend the tuning range down to 240 nm and up to 10 μm.

TOPAS-SHBC-400 specifications are given for the following SHBC output parameters:

  • 400 nm wavelength
  • 0.5 mJ pulse energy

Note 1: Specifications depend on SHBC output wavelength. If it differs from the value above, contact sales@lightcon.com.

Note 2: TOPAS-SHBC-400 output pulse energy scales linearly in 0.5 – 2 mJ range, provided the device is installed and optimized for particular pump energy. The device has to be re-optimized if the pump energy changes more than 10% from the installation value.

Model TOPAS-SHBC-400
Pump wavelength 770 – 830 nm
Pump pulse energy 0.3 – 4 mJ
Pump pulse duration (FWHM) 20 – 200 fs
Repetition rate < 20 kHz
Maximum pump power 20 W
Polarization Linear, horizontal
Spectral bandwidth < 1.2× transform limit
Pulse-to-pulse energy stability < 1% RMS deviation 1)
Pulse duration stability ⩽ 1% pulse-to-pulse
Pulse front tilt < 10% of pulse duration
Pulse contrast > 1 : 20
Beam quality (M2) < 1.3
Beam astigmatism < 0.15
Beam spatial profile Gaussian – Hyper-Gaussian
Intensity modulation < 15%, no hotspots
Beam pointing stability < 10 μrad
Beam divergence < 1.2× diffraction limit
Beam height from optical table 125 – 185 mm
Beam diameter, 1/e2 < 8 mm 2)
  1. Normalized to average pulse energy, NRMSD.
  2. Optional external telescope can be ordered for the beam size 8 – 28 mm.
Model SHBC
Output wavelength 385 – 415 nm
Conversion efficiency > 25% (20 – 70 fs),
> 35% (70 – 200 fs)
Spectral bandwidth < 10 cm-1
Time-bandwidth product < 1.2
Polarization Horizontal
Pulse-to-pulse energy stability < 3% RMS deviation 1)
  1. Normalized to average pulse energy, NRMSD.
Model TOPAS-SHBC-400
Tuning range

480 – 800 nm (Signal) 1)
800 – 2400 nm (Idler)

Pulse energy at peak
(Signal and Idler combined)
> 100 μJ 2)
Spectral bandwidth < 20 cm-1 @ 500 – 730 nm, 870 – 2400 nm
Time-bandwidth product < 1.2
Polarization Vertical (Signal)
Horizontal (Idler)
Pulse-to-pulse energy stability < 6% RMS deviation 3) @ 500 – 700 nm, 900 – 2000 nm
  1. Some energy and spectrum modulation possible in the 730 – 870 nm range.
  2. Assuming 0.5 mJ, 400 nm pump from SHBC. Conversion efficiency at peak of > 20%.
  3. Normalized to average pulse energy, NRMSD.
Extension SHS SHI
Tuning range 240 – 400 nm 400 – 480 nm
Pulse energy at peak > 20 μJ 1) > 15 μJ 1)
Spectral bandwidth < 20 cm-1 < 20 cm-1
Polarization Horizontal Vertical
  1. Assuming 0.5 mJ, 400 nm pump from SHBC.
Extension DFG1 DFG2
Tuning range 2.4 – 5 μm 4.7 – 10 μm
Pulse energy at peak > 2 μJ @ 3 – 3.5 μm 1) > 0.5 μJ @ 7 μm 1)
Polarization Vertical Horizontal
  1. Assuming 0.5 mJ, 400 nm pump from SHBC.

TOPAS Optical Parametric Amplifiers for Ti:Sapphire Lasers

Product datasheet.

Rev. 18/02/2021. Size 411 KB.

Femtosecond Laser Systems for Science

Product catalog.

Rev. 15/03/2021. Size 12 MB.

飞秒激光器飞秒科研系统

Product catalog in Chinese.

Rev. 26/02/2021. Size 12 MB.