Pulsed Lasers Blog Posts

Flexible 210-4500nm ns Laser Family for High Pulse Energy Applications

Quantum Light Instruments‘ (QLI’s) main product line is the Quantas Family.  This family of lasers offers compact, air-cooled, high-energy, low rep rate, DPSS lasers at the fundamental wavelengths of 1064 and 1053nm, as well as the less common 1163, 1177, 1300, 1317, 1551 and 1571nm options. They offer standard harmonic wavelengths, through the 5th harmonic (211 and 213nm), with the addition of an external harmonics module. The Quantas Family was designed for a wide range of applications that require high peak power / high energy pulses.

LIBS QLI’s Quantas Applications
Light Induced Breakdown Spectroscopy (LIBS)
• Time-of-Flight Spectroscopy (TOFS)
• Light Induced Fluorescence (LIF) Spectroscopy
• Flash photolysis
Matrix Assisted Laser Desorption / Ionization (MALDI)
• Pulsed Light Deposition (PLD)
• LCD repair, laser ablation, remote sensing and many others

The Quantas Family offers a wide selection of configurations. An example of the many configuration options includes a 120 mJ, 6ns, 10 or 20 Hz, 1053 nm, laser, called the Q2HE-F20, that can be configured with the H-SMART Harmonic module option for wavelength conversion through the 5th harmonic, or 211 nm in this instance. Higher rep rate configurations, up to 200 Hz, are available with energies in the millijoule level at 1064 nm.

Wavelength conversion into the infrared range, using an OPO, is also possible in the fully automated Q-TUNE Series, with a tunable wavelength range from 210 nm to 2300 nm. Furthermore, wavelengths into the MWIR region (up to 4500 nm) are available with the Q-TUNE IR. QLI employs MOPA (Master Oscillator/Power Amplifier) architecture to produce high pulse energies and short nanosecond pulses with low timing jitter, while maintaining a low divergence output; making them an ideal source for harmonics conversion, as well as timing-critical application setups. In addition to the H-SMART Harmonics module option mentioned above, the Quantas Laser Family is available with various options, including motorized attenuation through the UV, pulse energy monitors, fiber coupling, and single or multiple output options with hands-free tuning.


One of QLI’s crucial innovations is its TEC-based water-free laser crystal cooling technology, combined with laser diode end-pumping. The absence of water results in a compact, user-friendly turnkey laser system that requires minimal maintenance compared to traditional water-cooled lasers that require large chillers and bulky power supplies. This enhancement eliminates the risks associated with water cooling, reduces the overall operating cost, and provides for an even more compact and efficient cooling design.  The laser diode end-pumping technique provides enhanced cooling ability along the the length of the gain medium, 

Quantas Family Advantages

  • Air-cooled laser design (option for water-cooled heatsink for unique requirements)
  • High energy (up to 120 mJ), short nanosecond to sub-nanosecond pulses (≈ 750 ps – 8 ns)
  • Low divergent, bell shaped beam improves user ability to focus the beam
  • Efficient UV generation – Harmonics options down to 211 nm with >10% conversion efficiency
  • Compact & lightweight – system only ~4.5 kg (Q1)
  • Energy efficient – advantage for portable, multichannel systems (Typ. < 100 W consumption – some as low as ≈ 10 W)
  • Cost-effective – minimum redundant features
  • No regular maintenance


Every year, new requirements and applications emerge for our products. With those new applications come new requirements for laser specifications and performance. For example, an application may require a reduced laser or electronics footprint, a broader operating temperature range, or higher pulse energies. The list could go on and on. Therefore, if you do not find the appropriate specifications you are looking for, we will be glad to discuss your requirements and confirm the feasibility of optimizing our products per your needs.

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Below, we’ve outlined each base series within QLI‘s Quantas family. Click the series titles or pictures to go to our Quantum Light Instruments page, filtered for the chosen series, and get more details and specifications on each model we offer.



Q-SHIFT Series

The Quantas-Q-SHIFT series of Q-switched DPSS lasers feature a built‑in nonlinear wavelength conversion stage, allowing the production of wavelengths that are not accessible with conventional solid-state laser sources, including 1163, 1177, 1300, 1317, 1551 and 1571nm. An optional harmonics generator is also available for for the Q-SHIFT, allowing generation of up to the 4th harmonic for each fundamental wavelength.



Q-SPARK Series

The Q-SPARK series from Quantum Light Instruments Ltd., features a short <1.5 ns pulse with pulse energies up to 10 mJ. Due to the short cavity design, pulse durations of <800ps are achievable with pulse energies up to 5mJ. The innovative water-free laser crystal end-pumping technology produces a Gaussian-like, low divergence, high peak power laser beam in a compact, air-cooled package.




The Q-TUNE uses an optical parametric oscillator (OPO) to produce tunable wavelengths in 410 – 2300 nm range. The Q-TUNE tunable DPSS laser system provides 5ns pulses with up to 5 mJ of pulse energy in the visible spectrum and up to 100Hz repetition rate. The Q-TUNE-IR uses an Optical Parametric Oscillator (OPO) to produce tunable wavelength in 1380 – 4500 nm range with a linewidth less than 10 cm-1, achieving > 6.5mJ of pulse energy @ 3500nm for the F-10 configuration (> 2mJ @ 3500nm for C-10) with a 10Hz repetition rate.



Q1 Series

The Q1 series is a compact, energy-efficient, diode-pumped, air-cooled, Q-switched laser available at 1064 and 1053nm with up to 45 mJ of pulse energy and rep rates up to 50Hz. The high peak powers and low divergence of the Q1 series enable efficient harmonic conversion through the 5th harmonic (213 or 211nm). The innovative laser design has resulted in a user-friendly, turnkey system that requires little maintenance.



Q2 Series

The Q2 series is a versatile, diode pumped, air-cooled, Q-switched laser capable of achieving up to 80mJ of pulse energy with an operational rep rate up to 100Hz. Available at the fundamental wavelengths of 1064 and 1053nm, the innovative water-free laser crystal end-pumping technology produces Gaussian-like, low divergence laser beams with high peak powers, enabling efficient harmonics conversion through the 5th harmonic.


Quantas Q2HE QLI 1064 1053

Q2HE Series

The Q2HE series, from Quantum Light Instruments Ltd., features an innovative water-free laser crystal cooling technology that enables generation of high quality laser beams with up to 100 mJ pulse energy and/or up to 4 W of average output power. Featuring a pulse duration of less than 7 ns and a low beam divergence, the Q2HE is capable of achieving efficient fundamental wavelength conversion through the 5th harmonics of 213/211 nm.


Talk to a knowledgeable Product Manager today by Contacting Us here, or by calling us at 636.272.7227!


About Quantum Light Instruments:

Quantum Light Instruments, Ltd. specializes in EO Q-switched diode-pumped solid-state lasers optimized to operate at low pulse repetition rates with moderate pulse energies (up to 100 mJ and 100 Hz repetition rate). Our team members have more than 50 years of accumulated experience delivering advanced solid-state lasers systems and non-linear wavelength conversion devices to our customers. Quantum Light Instruments, Ltd. is a market-driven company. We listen to our customers and do our best to deliver solutions that meet and exceed expectations. No request is too small- we are happy to respond to all inquiries and provide our best support. Quantum Light Instruments is located in Vilnius, Lithuania. More than 20 photonics companies operate in Vilnius, delivering various equipment, starting from mirrors and mounts, optoelectronics, and finishing with advanced ultrafast lasers.

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