Applications
Optical Pumping
Diode and DPSS pump sources for solid-state, fiber and parametric lasers
Diode pumping
Diode lasers are the reference pump source for solid-state and fiber lasers. They offer high wall-plug efficiency and a narrow emission spectrum matched to the absorption band of the gain medium. This reduces the thermal load on the crystal and extends system lifetime compared with lamp pumping.
Monocrom designs and manufactures pump sources at component, module and subsystem level, with up to 250 W CW and 500 W QCW per bar:
- Mounted laser bars, for side pumping or direct integration into the customer’s design.
- Laser bar stacks, as bare components or encapsulated, for high-power pumping.
- Fiber-coupled bars, for end pumping and fiber lasers.
- Side-pumped gain modules for CW and QCW operation, ready to integrate into the resonator or amplifier.
Where the absorption band is narrow, we lock the emission with volume Bragg gratings (VBG/VHG).
| Gain medium | Pump wavelength | Notes |
|---|---|---|
| Nd:YAG | 808 nm · 885 nm | 885 nm: direct pumping, lower thermal load |
| Nd:YVO₄ | 808 nm · 880/888 nm | Direct pumping at 880/888 nm |
| Yb:YAG | 940 nm · 969 nm | 969 nm (zero-phonon line): requires VBG/VHG |
| Yb fiber lasers | 915 nm · 976 nm | 976 nm: VBG/VHG recommended |
| Tm (YAG, YLF, YAP) | 785–795 nm | Depending on host |
| Er:YAG | ~965 nm · 1470 nm · 1532 nm | ~965 nm: 2.9 µm emission, ~10 nm band · 1470 nm: broad band, tolerant to diode drift · 1532 nm: strongest but narrow line, requires VBG/VHG |
| Alexandrite (Cr:BeAl₂O₄) | 636 nm · 659 nm | Tunable emission around 755 nm |
| Cr:LiSAF / Cr:LiCAF | 659 nm · 675 nm | Tunable near-infrared emission (~800–1000 nm) |
DPSS pumping
Titanium-sapphire oscillators and amplifiers, dye lasers and parametric processes (OPO, OPA, OPCPA) are not pumped directly by diodes. They need a solid-state source with good beam quality and high pulse energy. Our diode-pumped Nd:YAG laser Ablon meets this need:
- At its fundamental wavelength (1064 nm) it is an excellent pump source for OPOs;
- With its second-harmonic module (532 nm) it matches the absorption band of Ti:Sa and many laser dyes.
| Application | Pump wavelength |
|---|---|
| Ti:Sa oscillators and amplifiers | 532 nm |
| Dye lasers | 532 nm |
| OPO | 1064 nm · 532 nm |
| OPA / OCPA | 532 nm · 1064 nm |
Have a pumping project?
Tell us about your gain medium, architecture and power requirements, and we will propose the most suitable source. We develop custom solutions for equipment manufacturers (OEMs).
I Want More Information
Contact us, tell us about your needs, and we will advise you on which diode laser modules best suit your requirements.
We undertake customized and tailor-made projects for our clients.
