穿透型繞射光柵 ∣ Lightsmyth-Coherent

穿透式光柵操作在將入射光依照不同光譜區域散射到對應位置上，Lightsmyth公司透過光刻技術製造出符合經濟效益的繞射光柵成品，能表現出大於95%的繞射效率，讓客戶減少光學系統的能量損失。一般用在高能脈衝與CW雷射系統，產品有極高的雷射損傷閾值，並且無有機鍍膜的處理可耐受高達500°C的瞬時溫度。與反射型的繞射光柵不同，穿透型光柵可以是偏振獨立的，並且有更大的散射角度範圍，可以在小空間達到極佳的光譜分辨能力。
穿透型繞射光柵特點

>95%的繞射效率
極低的偏振相關性耗損 polarization-dependent loss
特殊的通過波長範圍設計，並擁有極低的入射角度靈敏度
使用石英材料與極高剛性的介電材料
無使用聚合物與有機物(Telcordia 認證)
每一片Grating獨立製造，極低的能量散射
有極精準的光柵密度設計(line density uniformity, <0.001 lines/mm)
價格優勢極強

穿透型繞射光柵應用

光通訊 (ROADM, WSS, WDM mux/demux)
高能雷射應用
超快雷射的脈衝壓縮(皮秒與飛秒等級)
不同光譜的雷射光耦合
光學遙感測器與光譜儀系統

穿透型繞射光柵系列規格

Part Number	Optimal Wavelength (nm)	Grooves/mm	Angle of Incidence (°)(1)	Operational Polarization(2)	Diffraction Efficiency(3)	Dimensions (mm)
T-1400-800	800±20	1398.6	34.0±1	S and P	≥94
T-1400-800-100x24-94	800±20	1398.6	34.0±1	S and P	≥94	100 x 24
T-1400-800-12.7x12.7-94	800±20	1398.6	34.0±1	S and P	≥94	12.7 x 12.7
T-1400-800-130x14.9-94	800±20	1398.6	34.0±1	S and P	≥94	130 x 14.9
T-1400-800-24x14.9-94	800±20	1398.6	34.0±1	S and P	≥94	24 x 14.9
T-1400-800-24x24-94	800±20	1398.6	34.0±1	S and P	≥94	24 x 24
T-1850-800s	800±20	1851.85	47.8±1	S	≥94 typical
T-1850-800s-15.8x10-93	800±20	1851.85	47.8±1	S	≥93	15.8 x 10
T-1200-850s	850±20	1208.46	30.7±1	S	≥94
T-1200-850s-21.65x15.9-94	850±20	1208.46	30.7±1	S	≥94	21.65 x 15.9
T-1500-875	875±20	1503.76	41.0±1	S and P	≥94
T-1500-875-15.8X10-94X	875±20	1503.76	41.0±1	S and P	≥94	15.8 X 10
T-1500-875-24.8x15.8-94	875±20	1503.76	41.0±1	S and P	≥94	24.8 x 15.8
T-1702-895	895±20	1702.13	49.5±1	S and P	≥93
T-1702-895-24.7x15-93	895±20	1702.13	49.5±1	S and P	≥93	24.7 x 15
T-1850-915s	915±10	1851.85	57.9±1	S	≥93
T-1850-915s-31.8x10-93	915±10	1851.85	57.9±1	S	≥93	31.8 x 10
T-1850-915s-31.8x20.2-93	915±10	1851.85	57.9±1	S	≥93	31.8 x 20.2
T-1500-930	930±20	1500.38	44.2±1	S and P	≥94
T-1500-930-56x18-94	930±20	1500.38	44.2±1	S and P	≥94	56 x 18
T-1500-930-28X18-94	930±20	1500.38	44.2±1	S and P	≥94	28 x 18
T-1500-930-12X12-94	930±20	1500.38	44.2±1	S and P	≥94	12 x 12
T-1600-970s	970±10	1600	51.3±1	S	≥94
T-1600-970s-31.8x12.3-94	970±10	1600	51.3±1	S	≥94	31.8 x 12.3
T-1600-970s-31.8x24.8-94	970±10	1600	51.3±1	S	≥94	31.8 x 24.8
T-1850-970s	970±10	1851.85	63.9±1	S	≥93
T-1850-970s-31.8x10-93	970±10	1851.85	63.9±1	S	≥93	31.8 x 10
T-1850-970s-31.8x20.2-93	970±10	1851.85	63.9±1	S	≥93	31.8 x 20.2
T-1600-1030s	1030±10	1600	55.5±1	S	≥94
T-1600-1030s-120x20-94	1030±10	1600	55.5±1	S	≥94	120x20
T-1600-1030s-15.8x12.3-94	1030±10	1600	55.5±1	S	≥94	15.8 x 12.3
T-1600-1030s-31.8x12.3-94	1030±10	1600	55.5±1	S	≥94	31.8 x 12.3
T-1600-1030s-31.8x24.8-94	1030±10	1600	55.5±1	S	≥94	31.8 x 24.8
T-1600-1030s-64.8x20-94	1030±10	1600	55.5±1	S	≥94	64.8 x 20
T-1702-1030s	1030±10	1702.13	61.2±1	S	≥94
T-1702-1030s-24.7x15-94	1030±10	1702.13	61.2±1	S	≥94	24.7 x 15
T-1702-1030s-64.8x15-93	1030±10	1702.13	61.2±1	S	≥93	64.8 x 15
T-1739-1030s	1030±10	1739.13	63.6±1	S	≥94
T-1739-1030s-120x20-94	1030±10	1739.13	63.6±1	S	≥94	120 x 20
T-1739-1030s-20x10-94	1030±10	1739.13	63.6±1	S	≥94	20 x 10
T-1739-1030s-24x15-94	1030±10	1739.13	63.6±1	S	≥94	24 x 15
T-1739-1030s-47.9x10-94	1030±10	1739.13	63.6±1	S	≥94	47.9 x 10
T-1000-1040	1040±20	1000	31.3±1	S and P	≥94
T-1000-1040-12.3x12.3-94	1040±20	1000	31.3±1	S and P	≥94	12.3 x 12.3
T-1000-1040-120x20-94	1040±20	1000	31.3±1	S and P	≥94	120 x 20
T-1000-1040-120x24.8-94	1040±20	1000	31.3±1	S and P	≥94	120 x 24.8
T-1000-1040-31.8x12.3-94	1040±20	1000	31.3±1	S and P	≥94	31.8 x 12.3
T-1000-1040-31.8x24.8-94	1040±20	1000	31.3±1	S and P	≥94	31.8 x 24.8
T-1000-1040-60x12.3-94	1040±20	1000	31.3±1	S and P	≥94	60 x 12.3
T-1600-1060s	1060±20	1600	58.0±1	S	≥94
T-1600-1060s-120x20-94	1060±20	1600	58.0±1	S	≥94	120x20
T-1600-1060s-12.3x12.3-94	1060±20	1600	58.0±1	S	≥94	12.3 x 12.3
T-1600-1060s-31.8x12.3-94	1060±20	1600	58.0±1	S	≥94	31.8 x 12.3
T-1600-1060s-31.8x24.8-94	1060±20	1600	58.0±1	S	≥94	31.8 x 24.8
T-1600-1060s-64.8x20-94	1060±20	1600	58.0±1	S	≥94	64.8 x 20
T-1200-1310	1275-1345	1201.2	52.0±1	S and P	≥94 peak
T-1200-1310-27x10-90	1275-1345	1201.2	52.0±1	S and P	≥90 peak	27 x 10
T-1200-1310-27x10-94	1275-1345	1201.2	52.0±1	S and P	≥94 peak	27 x 10
T-1200-1310-32X12-94	1275-1345	1201.2	52.0±1	S and P	≥94 peak	32 X 12
T-940C	1525-1565	940.07	46.5±1	S and P	≥94 typical
T-940C-16x8.5-94	1525-1565	940.07	46.5±1	S and P	≥94	16 x 8.5
T-940C-21x17-94	1525-1565	940.07	46.5±1	S and P	≥94	21 x 17
T-940C-24x12.5-94-noAR	1525-1565	940.07	46.5±1	S and P	≥94	24 x 12.5
T-940C-24x12-90	1525-1565	940.07	46.5±1	S and P	≥90	24 x 12
T-940C-24x14-94	1525-1565	940.07	46.5±1	S and P	≥94	24 x 14
T-940C-24x20.5-90	1525-1565	940.07	46.5±1	S and P	≥90	24 x 20.5
T-966C	1525-1565	966.18	48.3±1	S and P	≥94 typical
T-966C-16x10-94	1525-1565	966.18	48.3±1	S and P	≥92	16 x 10
T-966C-24x16.4-92	1525-1565	966.18	48.3±1	S and P	≥92	24 x 16.4
T-966C-27x10-92	1525-1565	966.18	48.3±1	S and P	≥92	27 x 10
T-966C-27x10-94	1525-1565	966.18	48.3±1	S and P	≥94	27 x 10
T-966C-27x10-90OS	1525-1565	966.18	48.3±1	S and P	≥90	27 x 10
T-966C-27x10-92-noAR-OS	1525-1565	966.18	48.3±1	S and P	≥92	27 x 10
T-966C-29x13-92OS	1525-1565	966.18	48.3±1	S and P	≥92	29 x 13
T-966C-40x15-94	1525-1565	966.18	48.3±1	S and P	≥94	40 x 15
T-1000C	1525-1565	1000	50.6±1	S and P	≥94
T-1000C-31.8X12.3-94	1525-1565	1000	50.6±1	S and P	≥94	31.8 x 12.3
T-1000C-32X20-94	1525-1565	1000	50.6±1	S and P	≥94	32 x 20
T-1200C	1529-1568	1201.2	68±0.5	S	>90
T-1200C-57X7.5X8-S	1529-1568	1201.2	68+0.5	S	>90	57 x 7.5
T-940CL	1528-1610	940.07	48.4±1	S and P	≥94 typical
T-940CL-21x15-94p	1528-1610	940.07	48.4±1	P	≥94	21 x 15
T-940CL-24x18-90	1528-1610	940.07	48.4±1	S and P	≥90	24 x 18
T-940CL-27x10-90	1528-1610	940.07	48.4±1	S and P	≥90	27 x 10

(1) Gratings will be highly efficient over a larger range of angles; please inquire,
(2)P-polarization: incident electric-field vector perpendicular to grating lines. S-polarization: incident electric-field vector parallel to grating lines.
(3) For gratings supporting both S and P polarizations, the diffraction efficieny is the average efficiencies of S and P polarization at any given wavelength over the operation wavelength range.

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