A 1535 nm microchip laser core combines Er,Yb-doped glass with a Co:spinel saturable absorber. Bonding the gain medium and absorber into one compact element supports pulsed ranging and lidar designs while helping control thermal lensing.
Properties, applications and specifications
1535 nm Micro-Chips laser core
E r, Yb:glass+Co: spinel bonding crystal is a bonding crystal formed by bonding co: spinel at the end of Er, Yb: glass. It can effectively improve the comprehensive performance of Er, Yb: glass laser. The bonded structure is designed to reduce the thermal effect to meet high energy density lasers.
Bonding to form Er, Yb :glass+Co: spinel bonding crystals have the following effects:
l Improve the thermal effect of Er, Yb: Glass crystals
l Reduce the thermal lens effect formed during laser pumping
l Improve the beam quality of the laser
l Improve the output efficiency of the 1535 nm laser
l Improve the stability of the output capacity of the laser
l Improve the service life of the laser
The reference process uses surface activation bonding technology, which is a bonding technology at low or normal temperatures. The typical features are surface cleaning and surface activation.
Er, Yb :glass+Co: spinel bonded crystals have high bonding strength, small bonding surface absorption loss (generally less than 20ppm) and small change in bonding surface shape (bonding surface shape Typically Application: Laser Lidar, Laser rangefinders etc. Iterm Grade Part No. Dimension (mm) Output energy@25℃ Frequency Pulse width Beam size Stability Divergence angle 1 40uj LDB1535- L40-01 1.4x1.0x5.5 40uj@4A 0.35ms 1KHz 4+/-1ns 100um <3% <16mrad 2 100uj LDB1535- 100-02 1.4x1.0x7 100uj@7A 1.5ms 10KHz 4+/-1ns 200um <3% <16mrad 3 200uj LDB1535- 200-02 1.4x1.0x8 200uj@10A 1.5ms 10KHz 4+/-1ns 250um <3% <16mrad 4 300uj LDB1535- 300-02 1.4x1.0x10 300uj@12A 2ms 10KHz 4+/-1ns 300um <3% <16mrad 5 500uj LDB1535- 500-02 1.4x1.0x13 500uj@20A 2ms 10KHz 5+/-1ns 400um <3% <16mrad 6 750uj LDB1535- 750-01 2.0x1.6x17 750uj@25A 2ms 5KHz 6+/-1ns 500um <3% <16mrad For higher-energy 1535nm designs, ErYb:Glass and Co:Spinel can be specified as separate materials or as a bonded configuration.
