AIMPICO's diode-pumped solid-state (DPSS) lasers complement our diode laser lineup by providing access to wavelengths and performance characteristics that direct diode lasers alone cannot achieve. By using a diode laser to pump a solid-state gain medium — typically a crystal such as Nd:YAG or Nd:YVO₄ — and then frequency-converting the output, DPSS lasers produce highly stable, low-noise beams at wavelengths from the deep UV through the near-infrared that are critical for scientific and life science applications.
How DPSS Lasers Work
In a DPSS laser, a semiconductor diode laser (usually emitting at 808 nm) pumps energy into a laser crystal. The crystal amplifies light at its characteristic wavelength — for example, 1064 nm for Nd:YAG. That infrared beam is then passed through a nonlinear crystal that converts it to a shorter, visible wavelength through frequency doubling (second harmonic generation) or sum-frequency mixing.
This multi-stage architecture gives DPSS lasers several advantages over direct diode emission:
Superior Beam Quality
DPSS lasers naturally produce a TEM₀₀ Gaussian beam with near-perfect spatial coherence — ideal for confocal microscopy and other applications requiring a diffraction-limited focus.
Excellent Noise Performance
Well-designed DPSS cavities deliver extremely low RMS noise (typically <0.5%), essential for quantitative fluorescence measurements where signal-to-noise ratio directly impacts data quality.
Wavelength Accessibility
Through frequency doubling, tripling, and quadrupling, DPSS lasers reach wavelengths across a broad range — from deep UV at 261 nm to the 1064 nm fundamental — covering lines where high-quality direct diode sources are limited or unavailable.
Available Wavelengths
| Wavelength | Generation Method | Common Applications |
|---|---|---|
| 261 nm | Fifth-harmonic generation | Deep UV spectroscopy, photochemistry, semiconductor inspection |
| 266 nm | Fourth-harmonic of 1064 nm | Deep UV fluorescence, material inspection, micromachining |
| 320 nm | Harmonic generation | UV curing, UV Raman spectroscopy |
| 349 nm | Third-harmonic generation | UV fluorescence excitation, micro-processing |
| 355 nm | Third-harmonic of 1064 nm | UV Raman, micromachining, UV-excited fluorescence |
| 360 nm | Harmonic generation | UV fluorescence, photobiology |
| 457 nm | Frequency-doubled / intracavity | CFP excitation, forensics, display |
| 473 nm | Frequency-doubled Nd:YAG | Optogenetics (ChR2), blue laser displays, holography |
| 532 nm | Frequency-doubled Nd:YAG / Nd:YVO₄ | GFP, YFP, Raman spectroscopy, holography, alignment |
| 561 nm | Frequency-doubled Nd:YAG | mCherry, tdTomato, PE, RFP, confocal microscopy |
| 589 nm | Sum-frequency or Raman-shifted | Sodium D-line spectroscopy, guide star, yellow laser displays |
| 1030 nm | Yb-doped gain medium | NIR imaging, materials processing, optical sensing |
| 1064 nm | Nd:YAG / Nd:YVO₄ fundamental | Optical trapping, NIR imaging, LIDAR, materials processing |
Contact our applications team to discuss wavelength selection, power levels, and beam specifications for your application.
Applications
DPSS vs. Direct Diode: Choosing the Right Source
Choose a Diode Laser when…
- You need fast modulation (microsecond switching)
- The most compact form factor is required
- Your target wavelength is directly available from a diode (e.g. 405 nm, 488 nm, 635 nm)
Choose a DPSS Laser when…
- You need the highest beam quality at green or yellow-green wavelengths
- The lowest possible intensity noise is required for quantitative measurements
- A perfectly Gaussian beam is needed for diffraction-limited focusing
In many multi-laser systems — such as flow cytometers or multi-channel microscopes — a combination of both diode and DPSS sources provides the best overall performance.
Engineering for Reliability
DPSS lasers require careful thermal management to maintain stable output. AIMPICO addresses this with precision temperature control of both the pump diode and the laser crystal, ensuring consistent wavelength and power output even in variable laboratory environments. Our DPSS lasers are designed for continuous operation and are backed by comprehensive performance specifications and warranty support.
Ready to Get Started?
Whether you're specifying lasers for a new instrument platform or upgrading an existing system, AIMPICO's DPSS lasers deliver the beam quality and stability your research demands.