Ultra-compact, 2940 nm, fixed wavelength laser system for optimal water absorption.
Tuning Range
2940 nm (fixed)
Peak OPO Energy
6 mJ @ 2940 nm

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Opolette 2940

Water is the primary component of biological samples relevant to life sciences. With the Opolette 2940, a micro-sized cross-section can be desorbed while keeping sample constituents intact. Ionization can occur directly or through the addition of a secondary ionization source, followed by mass spectrometric analysis. The OpoletteTM 2940 is designed for custom or commercial ion source integration. An SDK is available to integrate laser functions into instrument software. The laser can be factory tuned to other absorption peaks between 2600 and 3450 nm.

Product Features

  • Light-weight, ultra-compact fixed wavelength laser system
  • Integrated pump laser with quick connect cables
  • End-user replaceable flashlamp (50 million shot lifetime) and DI cartridge
  • Alignment verification
  • Integrated alignment diode laser for OPO beam path identification
  • Flashlamp and/or Q-Switch external triggering
  • Access to residual beams
  • WARRANTY: One year on the entire system. Includes all options except fibers.

Product Options

  • Protective Hard Shell Cases (PHSC)
    Includes two protective hard cases with custom foam padding.
  • External Motorized Variable Attenuator (eMVA)
    End-user installable/removable. Reduces max OPO by 10-15% when installed. Computer controlled. Can only be used with visible and near-infrared wavelengths.
  • Fiber Delivery Kit (FD)
    Can be optimized for either ultra-violet (UV), visible (VIS), or near-infrared (NIR) tuning ranges.
    Externally mounted fiber delivery kit includes mounts, coupling lens and fiber. Fiber specifications: 2.5 m long, 1 mm diameter core, NA = 0.22
  • Harmonic Generation (HG)
    355 nm generated from residual 1064 nm.
  • Extended Warranty (EXW)
    Extends full system warranty for one additional year, for a total of two years. Includes all options except for fibers.


Opolette HE 2940

Output Wavelength 2940 nm
Peak Energy 6 mJ @ 2940 nm
Repetition Rate 20 Hz
Pulse Width 5 – 7 ns
Beam Diameter 4 mm
Divergence 10 (H) x 2 (V) mrad


Mass Spectrometry

Mass spectrometry is an application used to identify molecules within a sample by measuring the mass-to-charge ratio of ions. There are three components of mass spectroscopy: ionizing, analyzing, and detecting.

A sample is ionized and then ions are accelerated and sent through an electric and magnetic field, which affects speed and trajectory. The magnitude at which an ion changes trajectory depends on the mass-to-charge ratio. Ions with the same ratio will be deflected in the same amount.

The differences in mass-to-charge ratio allows a mass analyzer to sort the ions, and results are displayed as spectra of the relative abundance of the detected ions, based on the mass-to-charge ratio. Components of the sample are identified by correlating known masses of substances to the masses identified in the sample or through fragmentation pattern.

Lasers are used in two different ways in mass spectrometry.  They are used to vaporize the sample and to ionize it.

Two-step laser mass spectrometry (L2MS) requires two steps using two different laser pulses.  In the first step, a pulsed infrared laser is focused on the sample to cause rapid heating and desorption of molecules in the sample.  In the second step, a pulse ultraviolet laser causes ionization of the desorbed molecules.  The molecules are then analyzed.  In this method, desorption and ionization are independently tunable.  This allows trace amounts of organic molecules to be detected in complex materials.

Matrix-assisted laser desorption ionization (MALDI) uses one step and one laser pulse to both vaporize and ionize the sample.  Before starting, the sample is mixed into a laser energy absorbing matrix material.  A pulsed laser triggers ablation and desorption of the sample and the matrix material.  Molecules are ionized in the hot plume of ablated gases and then analyzed.

Contact us for assistance in selecting the appropriate system for your mass spectrometry application.




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