Conduction cooled compact laser for the MALIS instrument (original) (raw)
Conduction cooled compact laser for the supercam LIBS-RAMAN instrument
2017
A new conduction cooled compact laser for SuperCam LIBS-RAMAN instrument aboard Mars 2020 Rover is presented. An oscillator generates 30mJ at 1µm with a good spatial quality. A Second Harmonic Generator (SHG) at the oscillator output generates 15 mJ at 532 nm. A RTP electro-optical switch, between the oscillator and SHG, allows the operation mode selection (LIBS or RAMAN). Qualification model of this laser has been built and characterised. Environmental testing of this model is also reported.
Optics and Lasers in Engineering, 2005
We describe the ongoing activities in Observatoire Cantonal de Neuch# atel in the fields of precision laser spectroscopy and metrology of Rb atomic vapours. The work is motivated by the potentials of highly stable and narrowband laser light sources for a variety of technical and scientific applications. We describe the use of extended-cavity diode lasers for the realisation of such narrowband light sources and the basic schemes under study for their stabilisation, with focus on Doppler and sub-Doppler laser spectroscopy. The resulting laser systems offer good frequency stabilities and can be effectively miniaturised. This makes them interesting for direct applications of these techniques, as well as the presently developed precision instruments: compact atomic frequency standards for ground and space applications (GALILEO satellite positioning system), secondary optical frequency standards, transportable extended cavity diode lasers as seeding lasers, and others. r
An ion beam cooler for collinear laser spectroscopy
Hyperfine Interactions, 2000
An ion beam cooler has been constructed and tested at the IGISOL mass separator facility at the University of Jyvskyl. The cooler is designed to improve the ion optical properties of radioactive ion beams produced with fission-, light-ion fusion and heavy ion fusion ion guides. The performance of the device has been tested in off- and on-line conditions. It has
Infrared Lasers in Nanoscale Science
CO2 Laser - Optimisation and Application, 2012
The N 2 laser is known as a pulse ultraviolet laser and in addition it covers some lines in the infrared up to 8,2 µm. Normally, the pulse width is a few nanoseconds and a high-voltage power supply of 30-40 kV is necessary to excite it. The HF is a high power chemical laser media with an emission wavelength of about 2,7 µm, a laser pulse of the order of µs in duration and the output energy ranges from 1 J to more than 1 kJ per pulse. The DF and HBr chemical lasers emit larger wavelengths than the HF laser, and their output power is lower [1,2]. www.intechopen.com CO 2 Laser-Optimisation and Application 326 The CO 2 laser is a gas laser electrically pumped, that emits in the mid-infrared. It gives a cw output at 10 µm in the infrared with a high efficiency and it is the most practical molecular laser. There are a large number of CO 2 lasers, varying in structure, method of excitation and capacity, which can provide hundreds of laser lines, the main ones being between 9 and 11 µm. The output power of even a small CO 2 laser is about 1 kW and large ones give over 10 kW. The usual way of obtaining single-line oscillation is to use a diffraction grating in conjunction with a laser resonator. If only mirrors are used, simultaneous oscillation on several lines in the neighborhood of 10,6 µm is commonly obtained [1,2]. Transverse excited atmosphere (TEA) CO 2 lasers have a very high (about atmospheric) gas pressure. As the voltage required for a longitudinal discharge would be too high, transverse excitation is done with a series of electrodes along the tube. TEA lasers are operated in pulsed mode only, as the gas discharge would not be stable at high pressures, and are suitable for average powers of tens of kilowatts [1,2]. Although N 2 O and CO laser have a lower output power than the CO 2 laser, they have about one hundred laser lines each in the ranges 10-11 µm and 5-6,5 µm, respectivelly (considering the main isotopic species). The molecules NH 3 , OCS, CS also have quite a few laser lines in the infrared. With the SO 2 , HCN, H 2 O, many laser lines are obtained in the infrared from 30 µm up to submilimeter wavelengths [1,2]. Dye lasers are convenient tunable lasers in the visible but not so far in the infrared, mainly due to the lack of appropriate dyes, and in addition, since the dye laser medium is liquid, it is very inconvenient to handle.