Description
LHJ-1F is a high-precision offset frequency laser standard designed for the calibration and comparison of helium-neon lasers with a wavelength of 632.8 nm. The system is based on the LJSC-03-11 platform, where the absolute laser frequency is determined by an iodine vapor cell and used as feedback for stabilizing a higher-power laser. The device provides the same frequency accuracy and stability as the LJSC-03-11, while offering helium-neon tube output power of up to 1 mW.
The higher-power laser tube is synchronized with the stabilized helium-neon reference tube, and the offset value can be adjusted by the user over a wide range without degrading the laser frequency accuracy. LHJ-1F is a unique laboratory solution featuring automatic absorption peak detection, graphical display of results, and remote control from a PC. Thanks to its robust and compact design, the unit is suitable for both laboratory and field applications, including precision measurements, laser spectroscopy, and other high-accuracy tasks.
Main features
- Wavelength: 633 nm.
- Output power: 0.7–1.0 mW.
- Absolute frequency accuracy: 2.5 × 10-11 (12 kHz).
- Stabilization: based on an iodine vapor cell.
- Signal output: unmodulated output.
- Iodine components: manufactured and calibrated in accordance with BIPM requirements.
Functional capabilities
- Fully automatic operating mode.
- Automatic absorption peak detection.
- Graphical VFD display for result visualization.
- Remote control from a personal computer.
- Optical output via SMF or PMF (FC / APC).
- Turn-and-push user control interface.
Advantages
- High accuracy and stability: delivers reference-grade frequency performance for laser calibration and comparison.
- Adjustable frequency offset: allows wide-range offset tuning without compromising accuracy.
- Higher output power: up to 1 mW for applications requiring stronger optical output.
- Ease of use: full automation, display, and remote PC control simplify operation.
- Compact all-in-one design: suitable for laboratory and portable field use.
- Wide range of applications: ideal for precision metrology, spectroscopy, and other demanding optical tasks.
