# Laser transmitter

**URL:** https://forum.cloudray.com/c/laser-marking/laser-tube/30.md

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## [About the Laser transmitter category](https://forum.cloudray.com/t/about-the-laser-transmitter-category/57)

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**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\
**Replies:** 0

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## [The difference between Q-Pulse (Q-switched) fiber laser and MOPA fiber laser](https://forum.cloudray.com/t/the-difference-between-q-pulse-q-switched-fiber-laser-and-mopa-fiber-laser/258)

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**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\
**Replies:** 4\
**Last updated:** [August 24, 2022, 3:48am UTC](https://forum.cloudray.com/t/the-difference-between-q-pulse-q-switched-fiber-laser-and-mopa-fiber-laser/258 "2022-08-24T03:48:56Z")

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The Q-switched fiber laser has a long cavity length and a wide pulse width of the output laser. During the amplification process, the pulse waveform is difficult to narrow, and the pulse width and repetition frequency a…

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## [Overseas version 50W QB grounded port](https://forum.cloudray.com/t/overseas-version-50w-qb-grounded-port/298)

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**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\
**Replies:** 0\
**Last updated:** [April 20, 2021, 9:34am UTC](https://forum.cloudray.com/t/overseas-version-50w-qb-grounded-port/298 "2021-04-20T09:34:53Z")

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G port as shown in the picture.

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## [The difference between JPT JPT M1+, M6+ and M7 (MOPA)](https://forum.cloudray.com/t/the-difference-between-jpt-jpt-m1-m6-and-m7-mopa/259)

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**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\
**Replies:** 0\
**Last updated:** [April 12, 2021, 9:26am UTC](https://forum.cloudray.com/t/the-difference-between-jpt-jpt-m1-m6-and-m7-mopa/259 "2021-04-12T09:26:50Z")

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The same power is reflected in the pulse duration (Pulse Duration): M1+ (20W & 30W): 6-250ns; M6+ (20W): 1-250ns; M6+ (30W & 70W): 2-250ns; M7 (20W): 2-350ns; M7 (80-200W): 2-500ms;