Frequency hopping 589 nm fiber frequency doubling laser
The product description
A fast frequency hopping Raman fiber single-pass frequency doubling laser (RFA-SSHGJF) was developed by Erbium group to meet the demand of sodium lidar for frequency converted of 589 nm laser. Adopting ultra-narrow linewidth ECDL as seed source, Utilizing high speed modulator for frequency hopping, adopting all-fiber Raman amplifier for enhancing laser power and single passing periodic polarization crystal, Erbium group obtains the high power frequency doubling laser with frequency hopping. This product can achieve two 589 nm laser outputs. One is used to lock the laser to the sodium atomic absorption line at a constant frequency. The other laser support f+ 630MHz, F +0 MHz, F-630mhz fast switching. The laser power can reach more than 1.8 W, which perfectly matches the demand of sodium lidar seed source.
Technical indicators
Model |
RFA-SSHG-589-2¹ |
Central wavelength, nm |
589 |
Output Power² , w |
One >1.8 W;the other >10 mW |
Linewidth, kHz |
< 200 |
Frequency hopping requirements |
Modulation frequency 0-100Hz, frequency hopping time synchronization with the pump laser through the external TTL control; The 589 nm frequency shift is ±630 MHz after frequency hopping. Frequency hopping interval: < 1us. |
Pulse extinction ratio, dB |
>50 |
No jump mode tuning range, GHz |
>40 |
Totaltuning range, nm |
±1 |
RMS power stability |
<0.5 %@3hrs |
Beam Quality |
TEMₒₒ , M² <1.1 |
PER, dB |
>20 |
Working mode |
CW |
Cooling |
Water Cooling/Air Cooling |
Power Supply |
50-60Hz , 100-240VAC |
1: Maximum output power 2: Costumed for higher output power |