IQFROG

Frequency-Resolved Optical Gating Pulse Analyzer

The User-friendly Optical Pulse Analyzer

The IQFROG measures pulse intensity and phase in both spectral and temporal domains, yielding a complete pulse characterization. With its long delay arm and high resolution spectrometer, it measures chirped pulses up to 50 ps wide, or up to 10 ps wide if transform limited. The IQFROG is available in 1.0 and 1.5 micron wavelengths.

The IQFROG 1.0 μm is a perfect fit for seed laser pulses for chirped pulse amplification (CPA) and the IQFROG 1.5 μm for C-band femtosecond and picosecond pulsed fiber lasers.

High Spectral Resolution

The FROG measurement technique requires the measurement of second harmonic spectrum of the pulse. The resolution of the spectral measurement often limits the broadest pulse width that a pulse analyzer can measure, most other competitive products can only measure pulses less than 1ps.

Coherent Solutions’ IQFROG has a built-in high-resolution spectrometer to enable measurement of transform limited pulses of up to 10 ps width, or broader if the pulse has a frequency chirp.

Long Temporal Scan Range

The IQFROG uses a long mechanical translation stage to provide up to 200 ps of scan range to allow autocorrelation measurement of up to 50 ps long pulses. It is one of the few pulse analyzers on the market which can measure such broad picosecond pulses, as well as short pulses down to 300 fs width. In comparison the competitive SPIDER technique is limited in the ability to measure pulses broader than 1 ps.

Autocorrelator Function

The IQFROG can scan and save autocorrelation traces, even if the pulse is too broad (with a very narrow spectral width) or is unsuitable for FROG recovery. The IQFROG can be used as an autocorrelator and measure pulses up to 50 ps.

Connectorized Input

The connectorized input makes coupling of the beam easy and fast by eliminating the need to align the beam into the unit manually. IQFROG is by far the most easy-to-use optical pulse analyzer on the market.

Full Software Control

The mechanical control, alignment and tuning is controlled by the software, no more need to align manually.

Ease of Use

The IQFROG with its connectorized input, user-friendly full software control and USB connection to PC, makes it the smarter plug and play pulse analyzer.

How It Works

FROG (Frequency-Resolved Optical Gating Pulse Analyzer) Schematic DiagramThe FROG – Frequency-Resolved Optical Gating Pulse Analyzer is a spectrally resolved Second Harmonic Generation (SHG) autocorrelator. It can resolve sub-picosecond pulses since it is not limited by the response time of the detector. At each delay position on the autocorrelation, a complete SHG spectrum is measured, recording both the spectral and temporal characteristics of the pulse simultaneously. The two dimensional plot of SHG spectrum as a function of delay is referred to as a `spectrogram’. Once a spectrogram has been measured, a fast mathematical recovery algorithm is used to completely recover all the characteristics of the pulse, including pulse shape, spectrum, chirp and group delay.

Software User Interface

Optical Pulse AnalyzerThe IQFROG comes with dedicated all-in-one software, ‘Optical Pulse Analyzer’ (OPA) which controls, measures and recovers optical pulses using an intuitive user-friendly graphical user interface.

Product Warranty

3yr-WarrantyAll Coherent Solutions’ products come with a standard 3 year warranty.

Key Features

IQFROG 1.0 μm

  • 1000 – 1100 nm input pulse wavelength range
  • Intensity & phase measurement for pulses 300 fs to 50 ps long
  • Autocorrelation measurement up to 50 ps pulses
  • Connectorized optical input
  • Software driven automated operation
  • Dedicated software for measurement and recovery

IQFROG 1.5 μm

  • 1520 – 1610 nm input pulse wavelength range
  • Perfect for C & L band fiber lasers
  • Intensity & phase measurement for pulses 300 fs to 50 ps long
  • Autocorrelation measurement up to 50 ps pulses
  • Connectorized optical input
  • Software driven automated operation
  • Dedicated software for measurement and recovery

Download Spec Sheet

For technical specifications, please download the IQFROG Spec Sheet | 1.0 & 1.5 μm wavelength.

IQFROG 1.0 Micron Spec Sheet

IQFROG 1.5 Micron Spec Sheet

Papers Relating to FROG Measurement Techniques

Negative Kerr Nonlinearity of Graphene as seen via Chirped-Pulse-Pumped Self-Phase Modulation
Nathalie Vermeulen, David Castelló-Lurbe, JinLuo Cheng, Iwona Pasternak, Aleksandra Krajewska, Tymoteusz Ciuk, Wlodek Strupinski, Hugo Thienpont, and Jürgen Van Erps
Oct 16 Phys. Rev. Applied 6, 044006
View paper online

Frequency Resolved Optical Gating with the use of Second Harmonic Generation
K.W. Delong, R. Trebino, J. Hunter, W.E. White.
Nov ’94 J Opt Soc Am B-Opt Physics, Vol 11, Iss 11, pp 2206-2215

Complete Characterisation of pulse propagation in optical fibres
using Frequency-Resolved Optical Gating

L.P. Barry, J.M. Dudley, P.M. Bollond, J.D. Harvey, R. Leonhardt.
Dec ’96 Electron Lett, Vol 32, Iss 25, pp 2339-2340.

Direct measurement of pulse distortion near the zero-dispersion wavelength in optical fiber
by Frequency-Resolved Optical Gating

L.P. Barry, J.M. Dudley, P.G. Bollond, J.D. Harvey, R. Leonhardt.
Apr ’97 Optics Lett, Vol 22, Iss 7, pp 457-459.

Simultaneous measurement of optical fibre non-linearity and dispersion
using Frequency Resolved Optical Gating

L.P Barry, J.M. Dudley, P.G. Bollond, J.D. Harvey, R. Leonhardt.
Apr ’97 Electron Lett, Vol 33, Iss 8, pp 707-708.

Optimization of Optical Data Transmitters for 40-Gb/s Lightwave Systems
using Frequency Resolved Optical Gating

L.P. Barry, S. Del burgo, B.C. Thomsen, D.A. Reid, R.T. Watts, J.D. Harvey.
July ’02 Photonics Tech Lett, Vol 14, Iss 7, pp 971-974.

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