High Brightness Diode Laser Based on V-Shaped External Cavity and Beam-Waist Splitting Polarization Combining

A beam combining method to improve the brightness of diode lasers is proposed based on a V-shaped external cavity spectral beam and beam-waist splitting polarization combination. This design has the outstanding advantages of improving the beam quality, brightness, and versatility of the diode laser....

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Published inApplied sciences Vol. 13; no. 4; p. 2125
Main Authors Zhao, Yufei, Tong, Cunzhu, Wei, Zhipeng, Feng, Jian, Wang, Lijie
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2023
Subjects
beam combining
Beam waist position
Brightness
Circuit components
diode laser
Diodes
Efficiency
Emitters
external cavity
high beam quality and brightness
Laser applications
Lasers
Mirrors
Polarization
Semiconductor lasers
Splitting
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Abstract A beam combining method to improve the brightness of diode lasers is proposed based on a V-shaped external cavity spectral beam and beam-waist splitting polarization combination. This design has the outstanding advantages of improving the beam quality, brightness, and versatility of the diode laser. Specifically, an output power over 16W with M2 factors of 1.79 × 3.92 (Beam Parameter Product BPP = 0.55 × 1.22 mm mrad) at 40 A in the fast and slow axis is demonstrated for a commercial standard cm-bar. Furthermore, the slow axis M2 of the combined laser is improved by 56% compared with that of a single emitter. Additionally, the brightness of 262 MW·cm−2·sr−1, 136% higher than that of spectral beam combining without using beam-waist splitting polarization, was realized.
AbstractList A beam combining method to improve the brightness of diode lasers is proposed based on a V-shaped external cavity spectral beam and beam-waist splitting polarization combination. This design has the outstanding advantages of improving the beam quality, brightness, and versatility of the diode laser. Specifically, an output power over 16W with M[sup.2] factors of 1.79 × 3.92 (Beam Parameter Product BPP = 0.55 × 1.22 mm mrad) at 40 A in the fast and slow axis is demonstrated for a commercial standard cm-bar. Furthermore, the slow axis M[sup.2] of the combined laser is improved by 56% compared with that of a single emitter. Additionally, the brightness of 262 MW·cm[sup.−2]·sr[sup.−1], 136% higher than that of spectral beam combining without using beam-waist splitting polarization, was realized.
A beam combining method to improve the brightness of diode lasers is proposed based on a V-shaped external cavity spectral beam and beam-waist splitting polarization combination. This design has the outstanding advantages of improving the beam quality, brightness, and versatility of the diode laser. Specifically, an output power over 16W with M2 factors of 1.79 × 3.92 (Beam Parameter Product BPP = 0.55 × 1.22 mm mrad) at 40 A in the fast and slow axis is demonstrated for a commercial standard cm-bar. Furthermore, the slow axis M2 of the combined laser is improved by 56% compared with that of a single emitter. Additionally, the brightness of 262 MW·cm−2·sr−1, 136% higher than that of spectral beam combining without using beam-waist splitting polarization, was realized.
Audience Academic
Author Wang, Lijie
Zhao, Yufei
Feng, Jian
Tong, Cunzhu
Wei, Zhipeng
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StartPage 2125
SubjectTerms beam combining
Beam waist position
Brightness
Circuit components
diode laser
Diodes
Efficiency
Emitters
external cavity
high beam quality and brightness
Laser applications
Lasers
Mirrors
Polarization
Semiconductor lasers
Splitting
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Title High Brightness Diode Laser Based on V-Shaped External Cavity and Beam-Waist Splitting Polarization Combining
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