Compact LX Spider



The Compact LX Spider by APE is a portable, compact and robust instrument for spectral and temporal characterization of femtosecond laser pulses. It is the ideal candidate for Ti:Sa laser applications and other ultrashort pulse oscillators or amplifiers in the wavelength range 750 – 900 nm. Two interchangeable Optics Sets are available to cover pulse durations between 16 – 300 fs.

LX - Long Crystal = Compact Design

Based on the popular Spider method (Spectral Phase Interferometry for Direct Electric-field Reconstruction), the Compact LX Spider allows you to visualize the spectral and temporal characteristics of the measured pulse. The patented optical design incorporates a long crystal to up-convert two test pulse replicas. It also introduces spectral shear without the need for an additional chirped pulse. Both the temporal amplitude and the phase are calculated in real-time.


  • Ideal for the wavelength range of 750 – 900 nm, e.g. Ti:Sa Laser
  • Compact and robust design for easy portability
  • Real-time measurement of phase/intensity profiles
  • Software suite included
  • Fully automated

Compact LX Spider Specification 
Dimensions228 x 99 x 192 mm (W x H x D) (See datasheet for details)
Wavelength Range 750 - 900 nm
Typical Applications Ti:Sa Laser characterization
Optics Sets Exchangeable
Spectral Bandwidth Depending on Optics Set
Optics Set 1: 13 … 65 nm
Optics Set 2: 5 … 15 nm
Pulse Width Depending on Optics Set
Optics Set 1: 16 … < 150 fs
Optics Set 2: 70 … < 300 fs
Laser Repetition Rate Any; Single Shot
Input Polarization Linear (any orientation)
Input Power > 10 mW at e.g. 80 MHz, 80 fs
20 mW at e.g. 5 kHz, 35 fs
Input Trigger TTL for f < 10 Hz
Connection USB
Software Included; Features e.g.
▪ Spectral and temporal reconstruction
▪ Bar plot of dispersion orders suitable for alignment purpose
▪ Spectral phase fit and analysis up to fourth order
Notebook Notebook with pre-installed Software recommanded