The temperature on the atomic scale depends on the rate of movement of the atoms. Cooling individual atoms usually boils down to preventing the atoms from moving. But how does one grab a single atom and stop it?
Some atomic cooling techniques are Doppler cooling, Sub–Doppler cooling, and atom evaporation in a Bose-Einstein condensate.
Atomic trapping and cooling are typically used in applications such as:
- time/frequency standards (atomic clocks)
- GPS systems and navigation
- research on fundamental constants
- quantum information (computing and encryption)
- atom interferometry
For laser cooling on atomic resonances (such as Doppler cooling), you need a precise wavelength to match a specific atomic/ion transition, making DFB fiber lasers ideal. You can get this from a laser with a linewidth narrower than the atomic transition.
Higher power lets you cool more atoms simultaneously. No other commercial system provides equally high power at key cooling and trapping wavelengths as the Koheras HARMONIK, and with pristine beam quality.
Trap & cool with Koheras
Koheras lasers offer ultra-low noise, narrow linewidth, and high-frequency stability in a rugged fiber format. For trapping and cooling applications, we recommend our Koheras BOOSTIK HP single-frequency laser together with the Koheras HARMONIK frequency converter modules.
The BOOSTIK system has advantages that have made it a daily driver in hundreds of laboratories around the World:
- High power
- Excellent beam quality
- Ultra-low phase noise
- Easy to use and maintenance-free
The BOOSTIK HP laser and HARMONIK frequency converter module come in different wavelength ranges and power levels to suit the many different needs of atomic physics.
|2, 5, 10 or 15W
|2, 5 or 10W
Get wavelength freedom
One of the key advantages of our DFB fiber laser technology is the freedom to choose the operating wavelength. Due to the excellent beam quality, frequency conversion can efficiently bring many important applications within atomic physics within reach of the HARMONIK system.
Frequency conversion examples are shown below.
aeroGUIDE-POWER fiber delivery for high power narrow linewidth light
The aeroGUIDE-POWER is the gold standard of high power single-mode fiber delivery and offers the highest nonlinear threshold of any PM single-mode delivery system on the market.
The systems are equipped with high-power SMA-905 connectors with built-in mode strippers to remove uncoupled light. The aeroGUIDE-POWER is single-mode and can guide light with low loss anywhere in the 500 to 2000 nm range. The fiber is protected by an armored square lock steel cable that can handle daily use and even inter-lab routing through walls.
How have others used Koheras lasers for atomic physics? Read the publications here.