- Two modules: temperature and current driver plus laser unit
- Laser diode switch: yes
- Display: laser current, photodiode current, instant and set temperatures
- Manual laser current setting
- Laser current modulation signal input: BNC
- Laser photodiode signal output: BNC
- Laser current signal output: BNC
- Laser diode protection: relay, Shottky diode, slow-start/stop
- Internal generator for electric current modulation which is used for spectral sweep of the laser beam
- The device is programmable from a PC via USB interface
- Open source Linux and Windows driver sofware is supplied as well
- Light source: laser diode 780 nm
- Maximal optical power: 10mW
- Beam diameter: 25 mm (1″) at a distance ca. 25 cm (10″) from laser unit
- Tuning: temperature and current
- External resonator: none
- External laser diode current modulation: 12mA/V
- External modulation range (p-p) ca. 24 mA
- External tuning bandwidth: up to 800 MHz
- Outputs for laser current and photodiode current signals
- Power supply: 230 V AC, or 110 V AC on request
It is possible to change some parameters according to the customer’s needs.
This laser set is ideal as a teaching aid in student’s workshops in demonstrating basic quantum phenomena. Using our product one can get accustom to:
- Properties and control means of laser diodes, a basic tool in contemporary labratories
- Absorption and fluorescence phenomena
- Optical pumping technique
- Quantum level structure of 87Rb, a popular element used in cold atoms and Bose-Einstein condensate experiments
- Elementary subdoppler spectroscopy
- Saturation phenomena in atomic vapors,
- Spectroscopic separation of isotopes and many more
The figure below shows a transmission spectrum of rubidium vapors measured with the laser and recorded by the DAQ board.
Two deep transmission minima originate from 85Rb, two shallow, at both sides – od 87Rb. Comparing their relative intensity one can measure the relative isotope abundance in natural Rb.
click the photo to enlarge