CNI Single‑Frequency Lasers 369nm 405nm 770nm for Quantum and Cold‑Atom Research
Published: 2026-08-27 15:34:40 Views: 2
The MSL‑T series water‑cooled continuous‑wave single‑longitudinal‑mode lasers from Changchun New Industries Optoelectronics (CNI) deliver key research wavelengths including 369 nm, 405 nm and 770 nm. As all‑solid‑state single‑frequency light sources, they are widely deployed in quantum‑physics and cold‑atom experimentsChangchun .... Featuring ultra‑narrow spectral linewidth, long coherent length, excellent beam quality and low intensity noise, these lasers meet stringent coherence requirements for atomic cooling, quantum‑computing studies and high‑resolution spectroscopic measurement.
The series provides outstanding optical performance. Spectral linewidth is less than 10 MHz with coherent length exceeding 30 m, guaranteeing phase coherence for long‑path‑length interference and atomic‑resonance excitation experiments. Adopting water‑cooling thermal management, the laser runs in stable CW single‑longitudinal‑mode operation. Beam quality factor M² is below 1.2 and full‑angle beam divergence is less than 1 mrad for clean Gaussian output. Power stability reaches better than 1 % over four‑hour runtime with ±3 ℃ ambient fluctuation, and select configurations achieve stability better than 0.5 %. RMS amplitude noise is lower than 0.5 % within 20 Hz‑20 MHz, while polarization ratio exceeds 100:1 with vertical or horizontal polarization optional, satisfying strict noise and polarization specifications for precision optical setups.
The complete system consists of laser head, dedicated power supply and water chiller. With compact mechanical layout, the laser offers expected service lifetime over 10000 hours for long‑term laboratory operation. Output power can be selected from 1 mW to 80 mW, and operating ambient temperature ranges 15‑35 ℃ for easy integration into diverse research platforms.
Typical Applications
- Quantum science and cold‑atom physics: Atomic laser cooling, optical‑lattice experiments, quantum‑computing and quantum‑information research for atomic‑transition excitation.
- Precision spectroscopy: Raman scattering, surface‑enhanced Raman spectroscopy and high‑resolution spectral detection, taking advantage of narrow linewidth and long coherence length.
- Biophotonics: Fluorescence excitation and cell sorting experiments as stable monochromatic excitation sources.
Combining compact mechanical design, long operational lifetime and customizable output power, CNI single‑frequency lasers supply high‑performance domestic laser solutions for universities and research‑institute frontier‑physics projects.
