21.0 mW红光(632.8 nm)输出，线偏振，偏振比500:1
Thorlabs的圆柱形红光(632.8 nm)氦氖激光器采用管式设计。HNL210LB输出21.0 mW线偏振光，偏振方向垂直于激光器外壳后部的线缆。
激光器内置互锁电路，可与实验室安全系统连接。
Item # | Power Supply | Polarization Ratio | Power | 1/e2 Beam Diametera | Divergenceb | LMSc | Noise (RMS)d | Operating Voltage | Operating Current | Laser Class |
HNL210LB | 240 VAC | 500:1 | 21.0 mW | 0.70 mm | 1.15 mrad | 257 MHz | 0.5% | 3800 VDC | 6.5 mA | 3B |