Laser spectroscopy

For a long time laser spectroscopy has been source of inspiration for EKSPLA scientific laser engineers. Explore some typical applications where our picosecond and nanosecond lasers has been employed.

Laser spectroscopy Photoacoustic imaging Ultra-high intensity
Laser spectroscopy

LIDAR

LIDAR is an acronym for “LIght Detection And Ranging”. LIDAR sends out short laser pulses into the atmosphere, where all along its path, the light is scattered by small particles, aerosols, and molecules of the air and is collected by telescope for analysis. Due to the constant velocity of light, time is related to the scatter’s distance, therefore, the spatial information is retrieved along the beam path. LIDAR uses ultraviolet, visible, or near infrared light to image objects. It can target a wide range of materials, including non-metallic objects, rocks, rain, chemical compounds, aerosols, pollutants, clouds, and even single molecules. LIDAR especially helps in those cases where access with conventional methods is troublesome.

LIDAR operating principle

LIDAR operating principle.

Recommended products

NL230

High Energy Q-switched DPSS Nd:YAG Lasers
  • Compact high energy and repetition rate nanosecond lasers
  • Up to 190 mJ energy
  • Up to 100 Hz repetition rate
  • Pulse duration in the 3 – 6 ns range

NL300

Compact Flash-lamp Pumped Q-switched Nd:YAG Lasers
  • Compact high energy nanosecond lasers
  • Up to 1100 mJ
  • Up to 213 nm harmonics modules
  • Motorized attenuators
  • 5 – 20 Hz pulse repetition rates

NT230

High Energy Broadly Tunable DPSS Lasers
  • Integrated OPO system
  • Diode pumped
  • Ultrabroad tuning range from 192 to 2600 nm
  • Up to 15 mJ in VIS, 2 mJ in UV
  • Up to 100 Hz pulse repetition rate

NT240

Broadly Tunable kHz Pulsed DPSS Lasers
  • High repetition rate OPO system
  • Ultrabroad tuning from 210 to 2600 nm
  • More than 60 µJ output pulse energy in UV
  • 1 kHz repetition rate

NT250

Tunable Wavelength UV-NIR Range DPSS Lasers
  • High repetition rate NIR-IR OPO system
  • Ultrabroad tuning from 335 to 2600 nm
  • Up to 1.1 mJ energy
  • 1 – 4 ns pulse duration

NT340

High Energy Broadly Tunable Lasers
  • Integrated OPO system
  • High energy
  • Ultrabroad tuning range from 192 to 4400 nm
  • Up to 90 mJ in VIS
  • Up to 20 Hz repetition rate

PhotoSonus T

High Energy Table-Top Tunable Wavelength Lasers for Photoacoustic Imaging
  • Integrated OPO system
  • Automated wavelength tuning from 330 to 2600 nm
  • Up to 230 mJ in range 660 – 2600 nm
  • 3 – 5 ns pulse duration

Similar applications

Principle of Laser-Induced Plasma Spectroscopy
Plasma Physics

Laser-induced plasma has been used for different diagnostic and technological applications as detection, thin film deposition, and elemental identification.
Principle of Laser Flash Photolysis
Photolysis

Photodissociation, photolysis, or photodecomposition is a chemical reaction in which a chemical compound is broken down by photons.
Principle of Sum Frequency Generation Vibrational Spectroscopy
SFG spectroscopy

Sum frequency generation vibrational spectroscopy (SFG-VS) is used to characterize vibrational bonds of molecules at surfaces or interfaces.
Principle of Second Harmonic Generation (SHG) Spectroscopy.
SHG spectroscopy / microscopy

SHG measurements provide information about: surface coverage, molecular orientation, adsorbtion-desorbtion processes, and reactions at interfaces.
Principle of Pump-Probe Spectroscopy
Pump-probe spectroscopy

The advantage of pump-probe spectroscopy is direct investigation of dynamics – excitation relaxation, energy transfer, photochemical reactions dynamics and movement of particles, structural changes.
Principle of Solid-phase Photoluminescence Spectroscopy
Solid-phase photoluminescence spectroscopy

Time-resolved Photoluminescence Spectroscopy (TRPL) is a contactless method to characterize recombination and transport in solid materials.

Principle of Gas-phase Ion Luminescence Spectroscopy
Gas-phase ion luminescence spectroscopy

Gas-phase ion luminescence spectroscopy is used to determine intrinsic electronic transition energies in the absence of a disturbing environment.
Principle of Supercontinuum Generation
Supercontinuum generation

Supercontinuum “White Light Lasers” have become a well-established turn-key fiber-laser technology addressing a wide range of applications from biomedical imaging to optical device characterization.
Principle of Time-Resolved Photoconductivity
Time-resolved photoconductivity

Time-resolved photoconductivity (TRMC) are key techniques used to perform the contactless determination of carrier density, transport, trapping, and recombination parameters in charge transport materials.
Z-scan operating principle
Z-scan

In nonlinear optics, z-scan technique is used to measure the non-linear index n2 (Kerr nonlinearity) and the non-linear absorption coefficient Δα.
LIDAR operating principle
LIDAR

LIDAR sends out short laser pulses into the atmosphere, where all along its path, the light is scattered by small particles, aerosols, and molecules of the air and is collected by telescope for analysis.
LIBS operating principle
LIBS

Laser-induced breakdown spectroscopy (LIBS) utilizes a high intensity short laser pulse to convert a very small amount of target material to plasma for optical analysis of the spectra
Principle of Terahertz Spectroscopy
Terahertz spectroscopy

Terahertz time-domain spectroscopy (THz-TDS) probes inter-molecular interactions within solid materials. THz-TDS covers the spectral region of 0.1-10 THz which is a low energy and non-ionizing region of the electromagnetic spectrum.
All applications